Bitcoin Mining Calculator: Raw ASIC Profit Math

How to calculate Bitcoin mining profitability

Every Bitcoin mining calculator — including a simple bit mining calculator — is built on one equation: profit = revenue − electricity cost. Getting an accurate answer means getting each side of that equation right, so it is worth understanding what drives the two halves before you trust any output.

The profitability formula explained

Mining revenue is your slice of what the whole network earns: your hashrate divided by network hashrate, multiplied by 144 daily blocks, the 3.125 BTC reward and the BTC price. Power cost is watts × 24 ÷ 1,000 × electricity rate. Subtracting that cost from revenue gives daily profit; multiplying by 30.44 estimates a month.

revenue = (your hashrate ÷ network hashrate) × 144 blocks/day × 3.125 BTC × BTC price

There are 144 blocks mined per day on average (one every ten minutes), and since the April 2024 halving each block pays a 3.125 BTC reward. Your share of those blocks equals your hashrate divided by the total network hashrate — currently around 780 EH/s. Multiply the BTC you earn by the market price and you have gross daily revenue. Because the network hashrate sits in the denominator, revenue falls whenever other miners add machines, even if nothing about your own rig changes.

Electricity is the dominant running cost, and the calculation is straightforward:

electricity cost = watts × 24 hours × kWh rate ÷ 1000

A 3,500 W miner running all day draws 84 kWh. At $0.072/kWh that is $6.05 per day; at a home German tariff near $0.35/kWh the same machine would cost over $29 per day and never turn a profit. This is exactly why the electricity price is the number that matters most in any Bitcoin mining calculator: a swing from $0.065 to $0.08/kWh changes an Antminer S21\u2019s monthly profit from about $185 to about $147 without touching the hardware at all.

What changes a Bitcoin mining calculator result?

A calculator snapshot changes with BTC price, network hashrate, difficulty, pool fees and your electricity rate. The calculator above compares current ASICs using the same daily-profit equation, but its result freezes today’s difficulty. Because network difficulty tends to climb 3–5% each month, a rig that looks good today can earn measurably less in six months. For a multi-month view that models difficulty growth, pool fees and hardware payback, use our full mining profitability calculator. For a broader electricity-first scenario, see the crypto profit calculator.

Example: what an Antminer S21 earns at 3 electricity rates

At a $100,000 BTC price and roughly 780 EH/s network hashrate, a 200 TH/s, 3,500 W Antminer S21 produces about $351 in monthly revenue before electricity. At $0.065/kWh it nets about $185 per month; at $0.072/kWh, $167; and at $0.08/kWh, $147. The table also shows comparable current ASICs under the same assumptions.

Figures exclude pool fees and difficulty drift. See the full ranking of every current model in the ASIC miner profitability table.

Hosted vs. home electricity — why the rate decides everything

A 3,500 W miner uses 84 kWh per day: at $0.072/kWh that is $6.05 daily, while a German home tariff near $0.35/kWh costs more than $29. Hosted rates of $0.065–$0.08/kWh can preserve a margin that typical home power removes. A calculator tells you whether the electricity math works; a hosting contract determines whether that quoted rate, uptime and operating conditions are actually available. That is what the hosting comparison answers: it lists real hosted electricity prices, minimum orders and contract terms so the theoretical profit above becomes a contract you can sign. If you are still choosing a machine, start with the ASIC miner rankings and then return here to model the electricity price you have been quoted.

Frequently asked questions