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Based on current live BTC price and network difficulty.
| Period | BTC mined | Revenue | Electricity | Net profit |
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Plain-English explanations of every term used above.
Miners run special computers that repeatedly guess numbers to solve a puzzle. Whoever solves it first gets a reward in new bitcoin. The more "guessing power" (hashrate) your machine has compared to everyone else, the better your odds of winning a reward.
How many guesses per second your miner makes. Measured in GH/s, TH/s or PH/s — each step is 1,000 times faster than the last. A higher hashrate means a bigger share of the rewards, but it also uses more electricity.
A measure of how hard the puzzle currently is across the whole Bitcoin network. It automatically adjusts roughly every two weeks so that, on average, a new block is found every 10 minutes. As more miners join worldwide, difficulty rises and everyone's individual share shrinks.
The amount of new bitcoin paid to whoever finds a block. It is currently 3.125 BTC and is cut in half roughly every four years in an event called the "halving".
Most individual miners can't realistically find a block alone, so they join a "pool" that combines everyone's hashrate and splits the rewards fairly. The pool takes a small cut — usually 1–2% — for running this service.
The unit your electricity bill is charged in. One kWh is 1,000 watts used for one hour. A 3,500W miner running all day uses 3,500 × 24 ÷ 1,000 = 84 kWh.
The maximum price per kWh you could pay for electricity before mining stops being profitable. If your real tariff is below this number, you're in profit; above it, you're losing money.
"Return on investment" — simply, how many days of profit it takes to earn back what you paid for the miner. After that point, everything is pure profit (minus ongoing electricity).