How to Calculate Mining Profit (Step-by-Step, 2026)

Mining profit isn't a vibe — it's a formula. Once you understand the five variables that drive it, you can size up any rig or coin in about a minute.

Plenty of people plug in a GPU, watch coins trickle into a wallet, and never check whether they're actually ahead of their power bill. This guide walks through the exact math, explains every variable in plain English, and gives you one fully worked example. If you'd rather skip the arithmetic entirely, the mining profit calculator does all of it with live network data — but it helps to know what's happening under the hood.

The mining profit formula

Profit is just revenue minus costs. The trick is that mining revenue depends on your share of the whole network, not a fixed payout. Here's the full picture:

That's the whole thing. The first line is where most of the confusion lives, so let's break each variable down.

Every variable, explained

• Your hashrate — how many hashes per second your rig produces on a given algorithm (MH/s for many GPU coins, TH/s for Bitcoin ASICs, kH/s for RandomX). This is the one number you control through hardware and tuning.
• Network hashrate — the combined power of every miner on that coin. Your slice of the rewards is your hashrate divided by this. As it rises, your slice shrinks.
• Block time — the average seconds between blocks. 86,400 is just the number of seconds in a day, so 86,400 ÷ block time is how many blocks the network mines daily.
• Block reward — the coins paid out per block (block subsidy plus transaction fees). This drops at halvings or schedule changes.
• Coin price — what the coin is worth in your currency right now. This is the most volatile input by far, and it can swing your result more than anything else overnight.
• Power draw — total wall power for the whole rig in watts. Use the at-the-plug number, not just the GPU's rated TDP, because the CPU, board, fans, and PSU losses all count.
• Electricity rate — your real $/kWh, including delivery charges and tiers. This single number decides whether marginal rigs are profitable or bleeding money.
• Fees and uptime — pool fees run roughly 0.5–2%, software/dev fees vary, and uptime is never a perfect 100% once you account for crashes, reboots, and re-tuning.

A fully worked example

These are illustrative round numbers, not live data — they exist to show how the formula flows. For real figures, use the calculator, which pulls current network stats and prices.

Say a single GPU does 50 MH/s on a coin with a 5,000,000 MH/s network, a 15-second block time, a 2-coin block reward, and a $10 coin price. The rig pulls 200 W at the wall and electricity is $0.12/kWh. Pool fee is 1%, uptime 97%.

So this example rig nets about $0.53 a day, or roughly $16/month, before hardware wear. Notice how electricity ate over a third of revenue — at $0.30/kWh instead of $0.12, the same rig would lose money. Power rate is usually the make-or-break input, which is exactly why our guide on whether GPU mining is still profitable hammers on it.

Don't forget depreciation

The daily net above ignores the cost of the hardware itself. If that rig cost $600 and you expect 2 years (730 days) of useful life, depreciation is about $0.82/day. Suddenly the "profitable" rig is underwater on a full-cost basis. Whether you count depreciation depends on your goal: if the hardware is a sunk cost you already own, the daily net is what matters; if you're deciding whether to buy, you must include it. Shopping used and renewed GPUs is one of the most effective ways to lower this line, since you're spreading a smaller purchase price over the same lifespan.

The variable that quietly erodes everything: difficulty growth

Here's the catch the formula hides: network hashrate isn't frozen. When a coin is profitable, more miners pile in, network hashrate climbs, and your fixed 50 MH/s earns a smaller slice of each block — even if the price never moves. This is difficulty growth, and it's why a rig that pays back in "8 months" on paper often takes much longer.

To handle it honestly, don't assume today's earnings continue forever. Model a monthly difficulty-growth rate (even a modest few percent) so your share shrinks over time. The ROI / breakeven calculator includes a difficulty-growth setting precisely so your payback estimate reflects this drift instead of a flat, too-rosy line. Picking a coin with a smaller or more stable network can also blunt the effect — see our most-profitable-coin breakdown for how the math shifts between coins.

From one-time math to ongoing bookkeeping

Calculating profit once tells you whether to start. Tracking it over time tells you whether to keep going — and it's what you'll need at tax time. Prices move, difficulty climbs, power bills arrive, and hardware ages, so a single snapshot goes stale fast. That's why it pays to re-run the free mining calculators on a regular schedule — plugging in your current income, costs, and depreciation so you always know your real P&L, not just a hopeful estimate. Use them to decide whether to start, and keep re-checking the numbers to stay honest month over month.

Frequently asked

Does the calculator include electricity and fees automatically? Yes — enter your power draw, rate, and fee percentages and the calculator applies every step of the formula above, so you don't have to chain the arithmetic yourself.

Should I compare GPUs or an ASIC for my coin? It depends on the algorithm: some coins are GPU-friendly, others are dominated by ASICs. Our ASIC vs GPU comparison covers the tradeoffs before you spend a dollar.

How often should I recalculate? Whenever the coin price swings hard, after a difficulty adjustment, or at least monthly. Mining economics drift constantly, so treat every result as a current reading rather than a promise.

Estimates only. Mining returns depend on volatile prices, rising difficulty, and your real costs. Not financial advice.