Understanding Video Card Hash Rates and Mining Profitability
In the world of cryptocurrency mining, the "Hash Rate" is the primary measure of your hardware's performance. It represents the number of calculations (hashes) your video card (GPU) can perform per second to solve the cryptographic puzzles required to secure the network and earn rewards. This calculator helps you determine whether your mining setup is profitable by factoring in hardware capabilities, power consumption, and operational costs.
What is Hash Rate?
Hash rate is expressed in hashes per second (H/s). Because modern GPUs are extremely powerful, we typically use larger prefixes:
kH/s (Kilohash): 1,000 hashes per second.
MH/s (Megahash): 1,000,000 hashes per second (Common for Ethereum Classic, Ravencoin).
GH/s (Gigahash): 1,000,000,000 hashes per second.
Different algorithms require different processing techniques. For example, an NVIDIA RTX 3080 might produce roughly 100 MH/s on the Ethash algorithm but will have a completely different hash rate for KawPow or Autolykos.
Key Factors Affecting Profitability
Simply having a high hash rate does not guarantee profit. You must calculate the balance between income and expenses.
1. Power Consumption (Watts)
Mining rigs run 24/7. Even a small difference in wattage can significantly impact your electricity bill. Efficiency is often measured in hashes per watt. High-end cards can often be "undervolted" to maintain high hash rates while reducing power draw, improving overall profitability.
2. Electricity Cost ($/kWh)
This is the single biggest variable in mining ROI (Return on Investment). A miner paying $0.05 per kWh can remain profitable long after a miner paying $0.25 per kWh has been forced to shut down. Always check your local utility rates before investing in hardware.
3. Network Difficulty and Rewards
As more miners join the network, the "difficulty" increases, meaning your share of the total hashrate decreases. This results in lower rewards over time unless the price of the cryptocurrency rises to compensate.
How to Use This Calculator
To get an accurate estimate of your potential earnings:
Enter Hash Rate: Input the total speed of your GPU(s). Select the correct unit (usually MH/s for GPU mining).
Enter Power: Input the total wattage of your rig. Don't forget to include the power drawn by the motherboard and CPU, not just the GPUs.
Electricity Cost: Input your residential or commercial electric rate.
Revenue per MH/s: Look up the current daily profitability for your specific coin on a market tracking site. This value fluctuates daily based on crypto prices.
Hardware Cost: Enter the total price of your equipment to calculate how many days it will take to break even (ROI).
function calculateMiningProfit() {
// Get Inputs
var hashRateInput = document.getElementById("hashRate").value;
var hashUnitMultiplier = document.getElementById("hashUnit").value;
var powerWatts = document.getElementById("powerWatts").value;
var elecCost = document.getElementById("elecCost").value;
var revPerMh = document.getElementById("revPerMh").value;
var poolFee = document.getElementById("poolFee").value;
var hardwareCost = document.getElementById("hardwareCost").value;
// Validation
if (!hashRateInput || !powerWatts || !elecCost || !revPerMh) {
alert("Please fill in all required fields (Hash Rate, Power, Electricity Cost, Revenue).");
return;
}
// Parse Float
var hashRate = parseFloat(hashRateInput);
var multiplier = parseFloat(hashUnitMultiplier);
var watts = parseFloat(powerWatts);
var kwhCost = parseFloat(elecCost);
var unitRevenue = parseFloat(revPerMh); // This is assumed to be $ per MH/s per day based on label
var feePercent = parseFloat(poolFee) || 0;
var cost = parseFloat(hardwareCost) || 0;
// Normalization: The Revenue input expects $ per MH/s.
// We need to convert the user's total hash rate into MH/s equivalents for calculation.
// If user selects GH/s (1000), and inputs 1, that is 1000 MH/s.
// Multiplier logic: 1 = MH, 1000 = GH, 0.001 = kH.
// Total Equivalent MH/s = hashRate * multiplier.
var totalMh = hashRate * multiplier;
// Calculations
// 1. Gross Revenue
// Formula: Total MH/s * Revenue per MH/s * (1 – pool fee decimal)
var feeDecimal = feePercent / 100;
var dailyGross = (totalMh * unitRevenue) * (1 – feeDecimal);
// 2. Electricity Cost
// Formula: (Watts / 1000) * 24 hours * Cost per kWh
var dailyPowerKwh = (watts / 1000) * 24;
var dailyElecCost = dailyPowerKwh * kwhCost;
// 3. Net Profit
var dailyNet = dailyGross – dailyElecCost;
var monthlyNet = dailyNet * 30;
// 4. Efficiency (MH per Watt)
// If watts is 0, avoid division by zero
var efficiency = 0;
if (watts > 0) {
efficiency = totalMh / watts;
}
// 5. ROI (Days to Break Even)
var roi = 0;
var roiText = "Never";
if (dailyNet > 0) {
roi = cost / dailyNet;
roiText = Math.ceil(roi) + " Days";
} else if (cost === 0) {
roiText = "Instant";
} else {
roiText = "Unprofitable";
}
// Update DOM
document.getElementById("dailyGross").innerText = "$" + dailyGross.toFixed(2);
document.getElementById("dailyElec").innerText = "-$" + dailyElecCost.toFixed(2);
document.getElementById("dailyNet").innerText = "$" + dailyNet.toFixed(2);
// Handle negative profit styling
var netElem = document.getElementById("dailyNet");
if(dailyNet < 0) {
netElem.style.color = "#c0392b";
} else {
netElem.style.color = "#27ae60";
}
document.getElementById("monthlyNet").innerText = "$" + monthlyNet.toFixed(2);
document.getElementById("efficiencyMetric").innerText = efficiency.toFixed(4) + " MH/W";
document.getElementById("roiDays").innerText = roiText;
// Show results
document.getElementById("resultsSection").style.display = "block";
}