Cryptocurrency Converter Calculator

Cryptocurrency Converter Calculator & Guide :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –card-background: #fff; –shadow: 0 2px 5px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; } .container { width: 100%; max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } header { width: 100%; background-color: var(–primary-color); color: white; padding: 20px 0; text-align: center; margin-bottom: 20px; } header h1 { margin: 0; font-size: 2.5em; } h1, h2, h3 { color: var(–primary-color); } .loan-calc-container { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 30px; } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 20px); padding: 12px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; box-sizing: border-box; } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; display: block; } .error-message { color: red; font-size: 0.85em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; justify-content: space-between; margin-top: 30px; } button { padding: 12px 25px; border: none; border-radius: 4px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; } .btn-primary { background-color: var(–primary-color); color: white; } .btn-primary:hover { background-color: #003366; } .btn-secondary { background-color: #6c757d; color: white; } .btn-secondary:hover { background-color: #5a6268; } .btn-success { background-color: var(–success-color); color: white; } .btn-success:hover { background-color: #218838; } #results { margin-top: 30px; padding: 25px; background-color: #e9ecef; border-radius: 8px; border: 1px solid var(–border-color); } #results h3 { margin-top: 0; color: var(–primary-color); text-align: center; } .main-result { font-size: 2.2em; font-weight: bold; color: var(–success-color); text-align: center; margin: 15px 0; padding: 15px; background-color: var(–card-background); border-radius: 4px; border: 1px solid var(–success-color); } .intermediate-results div, .key-assumptions div { margin-bottom: 10px; font-size: 1.1em; } .intermediate-results span, .key-assumptions span { font-weight: bold; color: var(–primary-color); } .formula-explanation { font-size: 0.9em; color: #555; margin-top: 15px; padding-top: 15px; border-top: 1px dashed var(–border-color); } table { width: 100%; border-collapse: collapse; margin-top: 20px; } th, td { padding: 10px; text-align: left; border: 1px solid var(–border-color); } th { background-color: var(–primary-color); color: white; font-weight: bold; } tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; caption-side: top; text-align: left; } canvas { margin-top: 20px; width: 100% !important; height: auto !important; border: 1px solid var(–border-color); border-radius: 4px; } .article-content { margin-top: 40px; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); text-align: left; } .article-content h2 { margin-top: 30px; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } .article-content h3 { margin-top: 20px; color: #0056b3; } .article-content p, .article-content ul, .article-content ol { margin-bottom: 15px; } .article-content ul, .article-content ol { padding-left: 25px; } .article-content li { margin-bottom: 8px; } .article-content strong { color: var(–primary-color); } .faq-item { margin-bottom: 15px; padding: 10px; border-left: 3px solid var(–primary-color); background-color: #f0f8ff; } .faq-item strong { color: var(–primary-color); display: block; margin-bottom: 5px; } .internal-links { margin-top: 30px; padding: 20px; background-color: #e9ecef; border-radius: 8px; border: 1px solid var(–border-color); } .internal-links h3 { margin-top: 0; color: var(–primary-color); } .internal-links ul { list-style: none; padding: 0; } .internal-links li { margin-bottom: 10px; } .internal-links a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .internal-links a:hover { text-decoration: underline; } .internal-links p { font-size: 0.9em; color: #555; margin-top: 5px; } .highlight { background-color: var(–success-color); color: white; padding: 2px 5px; border-radius: 3px; } .error-border { border-color: red !important; }

Cryptocurrency Converter Calculator

Cryptocurrency Conversion Tool

Convert between popular cryptocurrencies in real-time. Enter the amount of the first cryptocurrency you want to convert.

Enter the quantity of the cryptocurrency you wish to convert.
Bitcoin (BTC) Ethereum (ETH) Ripple (XRP) Litecoin (LTC) Cardano (ADA) Select the cryptocurrency you are converting from.
Ethereum (ETH) Bitcoin (BTC) Ripple (XRP) Litecoin (LTC) Cardano (ADA) Select the cryptocurrency you want to convert to.
Enter the percentage fee charged by the exchange or platform (0-100%).

Conversion Results

Exchange Rate:
Fee Amount:
Total Cost (incl. fee):
Formula Used:

1. Exchange Rate: Determined by current market data (simulated). 2. Fee Amount: (Amount to Convert * Exchange Rate) * (Conversion Fee / 100). 3. Converted Amount: (Amount to Convert * Exchange Rate) – Fee Amount. 4. Total Cost: Amount to Convert * Exchange Rate.

Historical Conversion Rate (Simulated)

Note: This chart displays simulated historical exchange rates for illustrative purposes.

Current Market Data (Simulated)

Exchange Rates
Pair Rate Last Updated

What is a Cryptocurrency Converter Calculator?

A cryptocurrency converter calculator is an essential online tool designed to help users quickly and accurately determine the value of one cryptocurrency in terms of another. In the volatile and complex world of digital assets, understanding real-time exchange rates and potential conversion costs is crucial for traders, investors, and even casual users. This tool simplifies the process by providing instant calculations based on current market data, allowing for informed decision-making regarding trades, investments, or simply understanding the worth of your digital holdings.

Who Should Use a Cryptocurrency Converter Calculator?

The utility of a cryptocurrency converter calculator extends to a wide range of individuals involved in the crypto space:

  • Traders: To quickly assess potential profits or losses from trades between different cryptocurrencies, factoring in exchange rates and fees.
  • Investors: To understand the current market value of their portfolio diversification across various digital assets.
  • Newcomers to Crypto: To grasp the relative value of different cryptocurrencies and make informed initial investments.
  • Users Sending/Receiving Crypto: To estimate the amount of a different cryptocurrency they will receive after conversion and potential fees.
  • Researchers and Analysts: To gather data points for market analysis and trend identification.

Common Misconceptions about Crypto Conversions

Several misconceptions can lead to costly mistakes:

  • "All exchanges have the same rates": Exchange rates can vary significantly between different platforms due to liquidity, trading volume, and proprietary pricing models.
  • "Conversion is always instant and free": Most conversions involve fees, and transaction times can vary depending on network congestion and the specific blockchain.
  • "Market price is the final price": The displayed market price (e.g., on a converter) is often an average. The actual price you get might include slippage and platform-specific fees.
  • "Crypto is too complex to understand": While complex, tools like a cryptocurrency converter calculator demystify basic conversions, making the space more accessible.

Cryptocurrency Converter Calculator Formula and Mathematical Explanation

The core function of a cryptocurrency converter calculator involves several key calculations, primarily centered around the exchange rate and any associated fees. While real-time market data is complex, the calculator simplifies it into a usable formula.

Step-by-Step Derivation:

  1. Obtain Current Exchange Rate: The calculator first fetches or uses a pre-defined, up-to-date exchange rate between the 'From' and 'To' cryptocurrencies. This rate represents how much of the 'To' currency one unit of the 'From' currency is currently worth.
  2. Calculate Gross Value: Multiply the 'Amount to Convert' by the 'Exchange Rate'. This gives the theoretical value in the 'To' currency before any fees are deducted.
    Gross Value = Amount to Convert * Exchange Rate
  3. Calculate Fee Amount: The conversion fee is typically a percentage of the transaction value. This is calculated based on the 'Gross Value'.
    Fee Amount = Gross Value * (Conversion Fee Percentage / 100)
  4. Calculate Net Converted Amount: Subtract the 'Fee Amount' from the 'Gross Value' to determine the final amount of the 'To' currency the user will receive.
    Converted Amount = Gross Value - Fee Amount
  5. Calculate Total Cost: This represents the initial value of the 'From' currency in terms of the 'To' currency, including the fee. It's essentially the 'Gross Value'.
    Total Cost = Gross Value

Variable Explanations:

Variable Meaning Unit Typical Range
Amount to Convert The quantity of the source cryptocurrency the user wishes to exchange. Cryptocurrency Unit (e.g., BTC, ETH) Positive Number (e.g., 0.1 to 1000+)
From Currency The cryptocurrency being converted from. Cryptocurrency Symbol (e.g., BTC, ETH) Predefined List (BTC, ETH, XRP, etc.)
To Currency The cryptocurrency being converted to. Cryptocurrency Symbol (e.g., BTC, ETH) Predefined List (BTC, ETH, XRP, etc.)
Exchange Rate The current market value of 1 unit of 'From Currency' in terms of 'To Currency'. To Currency / From Currency (e.g., ETH/BTC) Variable (e.g., 0.05, 15.0, 2000.0)
Conversion Fee Percentage The percentage charged by the platform for facilitating the conversion. Percent (%) 0% to 100% (Realistically 0.1% to 5%)
Gross Value The theoretical value of the converted amount before fees. To Currency Unit (e.g., ETH, BTC) Positive Number
Fee Amount The absolute value of the fee charged for the conversion. To Currency Unit (e.g., ETH, BTC) Non-negative Number
Converted Amount The final amount of the 'To' currency received after deducting fees. To Currency Unit (e.g., ETH, BTC) Non-negative Number
Total Cost The total value of the initial amount in the target currency, including fees. To Currency Unit (e.g., ETH, BTC) Positive Number

Practical Examples (Real-World Use Cases)

Example 1: Trading Bitcoin for Ethereum

An investor wants to trade some of their Bitcoin for Ethereum. They use the cryptocurrency converter calculator to see how much ETH they'll get.

  • Inputs:
    • Amount to Convert: 0.5 BTC
    • From Currency: Bitcoin (BTC)
    • To Currency: Ethereum (ETH)
    • Conversion Fee: 0.75%
  • Simulated Data:
    • Exchange Rate (ETH/BTC): 1 ETH = 0.05 BTC (meaning 1 BTC = 20 ETH)
  • Calculations:
    • Gross Value = 0.5 BTC * (1 / 0.05 ETH/BTC) = 10 ETH
    • Fee Amount = 10 ETH * (0.75 / 100) = 0.075 ETH
    • Converted Amount = 10 ETH – 0.075 ETH = 9.925 ETH
    • Total Cost = 10 ETH
  • Interpretation: For 0.5 BTC, the user will receive 9.925 ETH after a 0.75% fee. The total value of their 0.5 BTC in ETH terms is 10 ETH. This helps them decide if the trade is worthwhile.

Example 2: Converting XRP to Litecoin for a Small Purchase

Someone wants to use their Ripple (XRP) to buy something online that accepts Litecoin (LTC). They need to know if they have enough XRP.

  • Inputs:
    • Amount to Convert: 5000 XRP
    • From Currency: Ripple (XRP)
    • To Currency: Litecoin (LTC)
    • Conversion Fee: 1.0%
  • Simulated Data:
    • Exchange Rate (LTC/XRP): 1 LTC = 50 XRP (meaning 1 XRP = 0.02 LTC)
  • Calculations:
    • Gross Value = 5000 XRP * (0.02 LTC/XRP) = 100 LTC
    • Fee Amount = 100 LTC * (1.0 / 100) = 1.0 LTC
    • Converted Amount = 100 LTC – 1.0 LTC = 99.0 LTC
    • Total Cost = 100 LTC
  • Interpretation: Converting 5000 XRP will yield 99.0 LTC after a 1% fee. The total value is 100 LTC. This allows the user to confirm if they can afford the item priced at, say, 95 LTC.

How to Use This Cryptocurrency Converter Calculator

Using our cryptocurrency converter calculator is straightforward:

  1. Enter Amount: Input the quantity of the cryptocurrency you wish to convert into the "Amount to Convert" field.
  2. Select Currencies: Choose the "From Currency" (the one you have) and the "To Currency" (the one you want) from the dropdown menus.
  3. Set Fee: Enter the "Conversion Fee" percentage charged by your exchange or platform. If unsure, check your platform's fee schedule. A common range is 0.1% to 2%.
  4. View Results: The calculator will automatically update to show:
    • Converted Amount: The net amount of the 'To' currency you will receive.
    • Exchange Rate: The current rate used for the conversion.
    • Fee Amount: The exact amount deducted as a fee.
    • Total Cost: The gross value of your initial amount in the target currency.
  5. Analyze Charts & Tables: Examine the simulated historical chart and market data table to understand rate trends and current pricing.
  6. Copy or Reset: Use the "Copy Results" button to save the key figures or "Reset" to start a new calculation.

Decision-Making Guidance: Use the 'Converted Amount' to confirm if you'll receive enough of the target currency. Compare the 'Fee Amount' across different platforms if possible. The 'Total Cost' helps you understand the full market value.

Key Factors That Affect Cryptocurrency Conversion Results

Several dynamic factors influence the outcome of any cryptocurrency conversion:

  1. Market Volatility: Cryptocurrency prices are notoriously volatile. The exchange rate can change significantly within minutes, impacting the final amount received. This is why real-time data is crucial.
  2. Exchange Rate Fluctuations: Even within a short period, the specific rate offered by an exchange can shift based on supply and demand dynamics on that particular platform.
  3. Platform Fees: Different exchanges and wallets charge varying fees for conversions. These can be flat fees, percentage-based, or tiered. Understanding these is vital for accurate calculation. Our calculator includes a field for this.
  4. Slippage: In volatile markets or for large orders, the execution price might differ from the quoted price. This difference is called slippage, and it effectively increases the cost or reduces the amount received.
  5. Network Congestion: While not directly part of the conversion rate, high network congestion for a specific blockchain can lead to higher transaction fees (gas fees) and longer confirmation times, indirectly affecting the overall cost and timing of a crypto transaction.
  6. Liquidity: The ease with which a cryptocurrency can be bought or sold without significantly affecting its price. Low liquidity pairs might have wider spreads between buying and selling prices, leading to less favorable conversion rates.
  7. Order Type: Market orders execute immediately at the best available price, potentially incurring slippage. Limit orders allow you to set a specific price, but they may not execute if the market doesn't reach that price.
  8. Time of Conversion: Due to market volatility, converting at different times of the day or week can yield different results.

Frequently Asked Questions (FAQ)

Q1: How accurate is the cryptocurrency converter calculator?

A: The accuracy depends on the real-time data feed used. Our calculator uses simulated real-time rates for demonstration. Actual rates on exchanges can fluctuate rapidly.

Q2: Are the exchange rates shown the final price I'll get?

A: Not always. The calculator shows the rate based on current market data. Exchanges may have slight variations due to slippage, order book depth, and their specific pricing models. Always check the final price before confirming a trade.

Q3: What does the "Total Cost" represent?

A: The "Total Cost" represents the value of your initial amount in the target currency *before* any conversion fees are deducted. It's the gross amount.

Q4: Can I convert any cryptocurrency with this tool?

A: This calculator supports a selection of popular cryptocurrencies. For less common pairs, you may need to use a dedicated exchange or a more comprehensive trading platform.

Q5: How do I calculate conversion fees if my exchange charges a flat fee?

A: If your exchange charges a flat fee (e.g., $5), you would need to estimate the value of your conversion in USD first, then calculate the flat fee's percentage equivalent to input into the calculator, or manually subtract the flat fee from the 'Gross Value' after calculation.

Q6: What is slippage in crypto conversions?

A: Slippage occurs when the price at which your trade is executed is different from the price you expected. It's common in volatile markets or with large orders on exchanges with lower liquidity.

Q7: Does this calculator account for network transaction fees (gas fees)?

A: No, this calculator primarily focuses on the exchange rate and platform conversion fees. Network transaction fees (like gas fees for Ethereum) are separate costs that depend on network congestion and are paid to miners/validators, not the exchange.

Q8: Why is the chart data simulated?

A: Accessing live, historical data for all possible crypto pairs in real-time requires significant infrastructure and API integrations. This simulation provides a visual representation of how exchange rates can fluctuate over time, which is crucial for understanding market dynamics.

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var chartInstance = null; // Global variable to hold chart instance // Simulated market data (replace with actual API calls in a real application) var marketData = { "BTC-ETH": { rate: 0.05, lastUpdated: "2023-10-27 10:00:00" }, "ETH-BTC": { rate: 20.0, lastUpdated: "2023-10-27 10:00:00" }, "BTC-XRP": { rate: 1000, lastUpdated: "2023-10-27 10:00:00" }, "XRP-BTC": { rate: 0.001, lastUpdated: "2023-10-27 10:00:00" }, "ETH-XRP": { rate: 20000, lastUpdated: "2023-10-27 10:00:00" }, "XRP-ETH": { rate: 0.00005, lastUpdated: "2023-10-27 10:00:00" }, "BTC-LTC": { rate: 10, lastUpdated: "2023-10-27 10:00:00" }, "LTC-BTC": { rate: 0.1, lastUpdated: "2023-10-27 10:00:00" }, "ETH-LTC": { rate: 100, lastUpdated: "2023-10-27 10:00:00" }, "LTC-ETH": { rate: 0.01, lastUpdated: "2023-10-27 10:00:00" }, "BTC-ADA": { rate: 5000, lastUpdated: "2023-10-27 10:00:00" }, "ADA-BTC": { rate: 0.0002, lastUpdated: "2023-10-27 10:00:00" }, "ETH-ADA": { rate: 50000, lastUpdated: "2023-10-27 10:00:00" }, "ADA-ETH": { rate: 0.00002, lastUpdated: "2023-10-27 10:00:00" }, "XRP-LTC": { rate: 2, lastUpdated: "2023-10-27 10:00:00" }, "LTC-XRP": { rate: 0.5, lastUpdated: "2023-10-27 10:00:00" }, "XRP-ADA": { rate: 10, lastUpdated: "2023-10-27 10:00:00" }, "ADA-XRP": { rate: 0.1, lastUpdated: "2023-10-27 10:00:00" }, "LTC-ADA": { rate: 0.5, lastUpdated: "2023-10-27 10:00:00" }, "ADA-LTC": { rate: 2, lastUpdated: "2023-10-27 10:00:00" } }; // Simulated historical data for chart var historicalRates = { "BTC-ETH": [0.048, 0.049, 0.050, 0.051, 0.052, 0.050, 0.049, 0.050, 0.051, 0.053], "ETH-BTC": [20.4, 20.4, 20.0, 19.6, 19.2, 20.0, 20.4, 20.0, 19.6, 18.9], "BTC-LTC": [9.5, 9.7, 10.0, 10.2, 10.5, 10.0, 9.8, 10.0, 10.3, 10.6], "LTC-BTC": [0.105, 0.103, 0.100, 0.098, 0.095, 0.100, 0.102, 0.100, 0.097, 0.094] }; function getExchangeRate(from, to) { var pair = from + "-" + to; if (marketData[pair]) { return marketData[pair].rate; } // Fallback for inverse pairs if not explicitly defined var inversePair = to + "-" + from; if (marketData[inversePair]) { return 1 / marketData[inversePair].rate; } return null; // Rate not found } function validateInput(input) { var errorElement = document.getElementById(input.id + "Error"); var value = parseFloat(input.value); if (input.value === "") { errorElement.textContent = "This field cannot be empty."; errorElement.style.display = "block"; input.classList.add("error-border"); return false; } else if (isNaN(value)) { errorElement.textContent = "Please enter a valid number."; errorElement.style.display = "block"; input.classList.add("error-border"); return false; } else if (input.id === "conversionFee" && (value 100)) { errorElement.textContent = "Fee must be between 0 and 100%."; errorElement.style.display = "block"; input.classList.add("error-border"); return false; } else if (input.id === "amount" && value <= 0) { errorElement.textContent = "Amount must be positive."; errorElement.style.display = "block"; input.classList.add("error-border"); return false; } else { errorElement.textContent = ""; errorElement.style.display = "none"; input.classList.remove("error-border"); return true; } } function calculateConversion() { var amountInput = document.getElementById("amount"); var fromCurrency = document.getElementById("fromCurrency").value; var toCurrency = document.getElementById("toCurrency").value; var feeInput = document.getElementById("conversionFee"); var amountValid = validateInput(amountInput); var feeValid = validateInput(feeInput); if (!amountValid || !feeValid) { document.getElementById("convertedAmount").innerHTML = "–"; document.getElementById("exchangeRate").innerHTML = "Exchange Rate: "; document.getElementById("feeAmount").innerHTML = "Fee Amount: "; document.getElementById("totalCost").innerHTML = "Total Cost (incl. fee): "; return; } var amount = parseFloat(amountInput.value); var feePercentage = parseFloat(feeInput.value); var exchangeRate = getExchangeRate(fromCurrency, toCurrency); if (exchangeRate === null) { document.getElementById("convertedAmount").innerHTML = "N/A"; document.getElementById("exchangeRate").innerHTML = "Exchange Rate: N/A"; document.getElementById("feeAmount").innerHTML = "Fee Amount: N/A"; document.getElementById("totalCost").innerHTML = "Total Cost (incl. fee): N/A"; return; } var grossValue = amount * exchangeRate; var feeAmount = grossValue * (feePercentage / 100); var convertedAmount = grossValue – feeAmount; var totalCost = grossValue; // Total cost in the target currency before fees document.getElementById("convertedAmount").textContent = convertedAmount.toFixed(8); // Use toFixed for precision document.getElementById("exchangeRate").innerHTML = "Exchange Rate: 1 " + fromCurrency + " = " + exchangeRate.toFixed(8) + " " + toCurrency + ""; document.getElementById("feeAmount").innerHTML = "Fee Amount: " + feeAmount.toFixed(8) + " " + toCurrency + ""; document.getElementById("totalCost").innerHTML = "Total Cost (incl. fee): " + totalCost.toFixed(8) + " " + toCurrency + ""; updateMarketTable(fromCurrency, toCurrency); } function resetCalculator() { document.getElementById("amount").value = "1"; document.getElementById("fromCurrency").value = "BTC"; document.getElementById("toCurrency").value = "ETH"; document.getElementById("conversionFee").value = "0.5"; // Clear errors var errorElements = document.querySelectorAll('.error-message'); for (var i = 0; i < errorElements.length; i++) { errorElements[i].textContent = ""; errorElements[i].style.display = "none"; } var inputElements = document.querySelectorAll('.loan-calc-container input[type="number"], .loan-calc-container select'); for (var i = 0; i < inputElements.length; i++) { inputElements[i].classList.remove("error-border"); } calculateConversion(); updateChartData(); } function copyResults() { var convertedAmount = document.getElementById("convertedAmount").textContent; var exchangeRateText = document.getElementById("exchangeRate").textContent; var feeAmountText = document.getElementById("feeAmount").textContent; var totalCostText = document.getElementById("totalCost").textContent; var fromCurrency = document.getElementById("fromCurrency").value; var toCurrency = document.getElementById("toCurrency").value; var amount = document.getElementById("amount").value; var fee = document.getElementById("conversionFee").value; var resultText = "Cryptocurrency Conversion Results:\n\n"; resultText += "Amount: " + amount + " " + fromCurrency + "\n"; resultText += "Converting To: " + toCurrency + "\n"; resultText += "Conversion Fee: " + fee + "%\n\n"; resultText += "Converted Amount: " + convertedAmount + " " + toCurrency + "\n"; resultText += exchangeRateText.replace("Exchange Rate: ", "") + "\n"; resultText += feeAmountText.replace("Fee Amount: ", "") + "\n"; resultText += totalCostText.replace("Total Cost (incl. fee): ", "") + "\n"; // Use a temporary textarea to copy to clipboard var textArea = document.createElement("textarea"); textArea.value = resultText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied!' : 'Copying failed!'; alert(msg); // Simple feedback } catch (err) { alert('Oops, unable to copy'); } document.body.removeChild(textArea); } function updateMarketTable(from, to) { var tableBody = document.querySelector("#marketDataTable tbody"); tableBody.innerHTML = ""; // Clear existing rows var pairsToShow = [ from + "-" + to, to + "-" + from, "BTC-ETH", "ETH-BTC", // Add some common pairs "BTC-LTC", "LTC-BTC" ]; pairsToShow.forEach(function(pair) { if (marketData[pair]) { var row = tableBody.insertRow(); var cellPair = row.insertCell(0); var cellRate = row.insertCell(1); var cellUpdated = row.insertCell(2); cellPair.textContent = pair; cellRate.textContent = marketData[pair].rate.toFixed(8); cellUpdated.textContent = marketData[pair].lastUpdated; } }); } function updateChartData() { var fromCurrency = document.getElementById("fromCurrency").value; var toCurrency = document.getElementById("toCurrency").value; var pair = fromCurrency + "-" + toCurrency; var inversePair = toCurrency + "-" + fromCurrency; var rates = []; var labels = []; if (historicalRates[pair]) { rates = historicalRates[pair]; labels = rates.map(function(rate, index) { return "Day " + (index + 1); }); } else if (historicalRates[inversePair]) { // If direct pair data isn't available, use inverse and invert rates var inverseRates = historicalRates[inversePair]; rates = inverseRates.map(function(rate) { return 1 / rate; }); labels = rates.map(function(rate, index) { return "Day " + (index + 1); }); } else { // Fallback: Use current rate for a few points if no historical data var currentRate = getExchangeRate(fromCurrency, toCurrency); if (currentRate !== null) { rates = [currentRate, currentRate * 0.99, currentRate * 1.01, currentRate * 0.98, currentRate * 1.02]; labels = ["Now", "Day -1", "Day +1", "Day -2", "Day +2"]; } else { rates = [0, 0, 0, 0, 0]; // No data labels = ["N/A", "N/A", "N/A", "N/A", "N/A"]; } } drawChart(labels, rates); } function drawChart(labels, dataSeries1, dataSeries2) { var ctx = document.getElementById('conversionChart').getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } // Prepare data for chart.js (simulated) var chartData = { labels: labels, datasets: [{ label: 'Exchange Rate (' + document.getElementById("fromCurrency").value + '/' + document.getElementById("toCurrency").value + ')', data: dataSeries1 || [], borderColor: 'var(–primary-color)', backgroundColor: 'rgba(0, 74, 153, 0.1)', fill: true, tension: 0.1 }] }; // Add second dataset if provided (e.g., for comparison, though not strictly needed here) if (dataSeries2) { chartData.datasets.push({ label: 'Another Metric (Simulated)', data: dataSeries2, borderColor: 'var(–success-color)', backgroundColor: 'rgba(40, 167, 69, 0.1)', fill: false, tension: 0.1 }); } chartInstance = new Chart(ctx, { type: 'line', data: chartData, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: false } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Simulated Historical Exchange Rate Trend' } } } }); } // Initial calculations and chart draw on page load document.addEventListener('DOMContentLoaded', function() { resetCalculator(); // Sets defaults and calculates updateChartData(); // Draws initial chart updateMarketTable(document.getElementById("fromCurrency").value, document.getElementById("toCurrency").value); // Populate table initially }); // Dummy Chart.js library for demonstration purposes if not available // In a real scenario, you'd include the Chart.js library via CDN or local file if (typeof Chart === 'undefined') { console.warn("Chart.js library not found. Chart will not render."); window.Chart = function() { this.destroy = function() { console.log("Dummy chart destroy called."); }; console.log("Dummy Chart constructor called."); }; }

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