function calculateHashProfit() {
// 1. Get input values
var hashRate = parseFloat(document.getElementById("hashRate").value);
var hashUnit = parseFloat(document.getElementById("hashUnit").value);
var powerWatts = parseFloat(document.getElementById("powerWatts").value);
var elecCost = parseFloat(document.getElementById("elecCost").value);
var poolFee = parseFloat(document.getElementById("poolFee").value);
var rewardRate = parseFloat(document.getElementById("rewardRate").value);
// 2. Validation
if (isNaN(hashRate) || isNaN(powerWatts) || isNaN(elecCost) || isNaN(rewardRate)) {
alert("Please fill in all numeric fields (Hash Rate, Power, Cost, Reward).");
return;
}
if (isNaN(poolFee)) poolFee = 0;
// 3. Logic: Normalize Hashrate to kH/s (since reward is usually per kH/s for CPU coins)
// Unit values: H/s = 1, kH/s = 1000, MH/s = 1000000
// We want to convert INPUT to kH/s.
// If input is 500 H/s (unit=1), normalized = 0.5 kH/s.
// If input is 5 kH/s (unit=1000), normalized = 5.
// Formula: (hashRate * hashUnit) / 1000
var normalizedHashKhs = (hashRate * hashUnit) / 1000;
// 4. Calculate Revenue
// Reward rate is USD per 1 kH/s per Day
var dailyGrossRevenue = normalizedHashKhs * rewardRate;
// 5. Calculate Power Cost
// Watts / 1000 = kW. kW * 24 hours = kWh per day.
var dailyKwh = (powerWatts / 1000) * 24;
var dailyPowerCost = dailyKwh * elecCost;
// 6. Calculate Pool Fee
var dailyFeeCost = dailyGrossRevenue * (poolFee / 100);
// 7. Net Profit
var dailyNetProfit = dailyGrossRevenue – dailyPowerCost – dailyFeeCost;
// 8. Extrapolations
var monthlyNetProfit = dailyNetProfit * 30.41; // Average days in month
var yearlyNetProfit = dailyNetProfit * 365;
var monthlyPowerUsage = dailyKwh * 30.41;
// 9. Display Results
document.getElementById("results").style.display = "block";
// Helper for currency formatting
function fmt(num) {
return num.toLocaleString('en-US', { style: 'currency', currency: 'USD' });
}
document.getElementById("dailyIncome").innerText = fmt(dailyGrossRevenue);
document.getElementById("dailyCost").innerText = "-" + fmt(dailyPowerCost);
var profitEl = document.getElementById("dailyProfit");
profitEl.innerText = fmt(dailyNetProfit);
if (dailyNetProfit >= 0) {
profitEl.className = "profit-positive";
} else {
profitEl.className = "profit-negative";
}
var monthEl = document.getElementById("monthlyProfit");
monthEl.innerText = fmt(monthlyNetProfit);
monthEl.className = monthlyNetProfit >= 0 ? "profit-positive" : "profit-negative";
var yearEl = document.getElementById("yearlyProfit");
yearEl.innerText = fmt(yearlyNetProfit);
yearEl.className = yearlyNetProfit >= 0 ? "profit-positive" : "profit-negative";
document.getElementById("monthlyPower").innerText = monthlyPowerUsage.toFixed(2) + " kWh";
}
Understanding CPU Hash Rate
In the world of cryptocurrency mining and computer performance, Hash Rate serves as the primary metric of computational power. It represents the number of calculations (hashes) your Central Processing Unit (CPU) can perform per second. Unlike GPU mining which relies on graphics cards, CPU mining utilizes the processor of your computer to solve complex mathematical algorithms, such as RandomX (used by Monero).
The hash rate is typically measured in:
H/s: Hashes per second.
kH/s: Kilohashes per second (1,000 hashes).
MH/s: Megahashes per second (1,000,000 hashes).
How the Calculator Works
This calculator determines the profitability of your hardware by analyzing three main factors: speed, power consumption, and operational costs.
Hash Rate Normalization: The calculator first converts your input speed into kilohashes (kH/s), which is the standard unit for pricing most CPU-mineable coins.
Gross Revenue: This is calculated by multiplying your total kH/s by the current market reward rate (how much the network pays for that amount of work).
Power Overhead: Mining requires electricity. The tool calculates daily kWh usage based on your CPU's wattage (TDP or wall draw) and multiplies it by your local electricity rate.
Net Profit: Finally, the electricity costs and pool fees are subtracted from the gross revenue to show your actual take-home earnings.
Key Factors Affecting Profitability
1. CPU Efficiency (Hashes per Watt):
The most critical metric isn't just raw speed, but efficiency. A CPU that generates 5000 H/s at 65 Watts is often more profitable than one generating 6000 H/s at 140 Watts, especially in areas with high electricity costs.
2. Electricity Cost:
Residential electricity rates vary wildly from $0.05 to $0.30+ per kWh. If your rate is high, you may need extremely efficient hardware to break even.
3. Network Difficulty:
The "Reward per kH/s" fluctuates daily. As more people mine, the difficulty increases, and the reward per unit of hash rate decreases. It is important to update the "Est. Reward" field based on current network statistics for accurate results.