ASIC mining is an industrial game played at home prices. Enter your electricity rate and today's network earnings, and this calculator shows what an Antminer actually nets per day, per year, and how long the unit takes to pay for itself.
Updated September 2026 · Free · No sign-up
Estimate Antminer profit
Net profit
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Network earnings fall as more hashrate comes online between halvings. Build your plan on today's number, then stress-test it at half.
How the math works
An ASIC's gross revenue is its hashrate times the network's earnings per terahash per day — a number you can read off any mining calculator and that falls over time as the network's total hashrate grows. Multiply by uptime and subtract the pool's cut, then subtract electricity: watts ÷ 1000 × 24 × uptime × your rate. What is left is the only number that matters.
The calculator also shows J/TH — joules per terahash — which is how miners compare machines. A unit that mines the same but draws half the power per TH is worth far more than its price gap suggests, because electricity is the cost that never stops.
Stress-test before you buy
Set the network earnings input to half its current value and look at the answer again. The Bitcoin network's hashrate sits near one zettahash per second in late 2026 and has kept climbing between halvings, which pushes earnings per TH down mechanically. At 12¢ per kWh, today's air-cooled S21s are already cash-flow negative — a purchase that only works at today's numbers is a purchase that fails. The units that survive a bad stretch are the efficient ones bought at honest prices, run at electricity rates under about 8¢ per kWh.
Where the defaults come from
Model specs (TH/s and watts) are the published figures for Bitmain's current lineup. Prices are a late-September 2026 snapshot of marketplace listings, which mix new and resold stock and move with Bitcoin's price — sometimes weekly. The default network earnings of $0.037 per TH per day is computed from the live network: Bitcoin near $83,000, total hashrate near 1.02 ZH/s, difficulty near 132.76T, and 450 BTC of daily issuance. The default 8¢ electricity rate reflects where home mining is actually viable; the 18.3¢ US residential average is where it dies.
Late-September 2026 marketplace snapshots show a wide ladder: around $950 for a 151 TH/s S21, roughly $2,100 for the 234 TH/s S21 Pro, about $3,500 for the 270 TH/s S21 XP, and $8,300-plus for Bitmain's new-generation 305 TH/s S23. On the used floor, 134 TH/s S19 XPs list near $500 — cheap per unit, but they burn roughly twice the power per TH of the current generation.
How much does an Antminer make per day?
At current network conditions (roughly $0.037 per TH per day), a 270 TH/s S21 XP grosses about $9.90 daily. Net of electricity: about $4.70 at a 6¢ rate, $2.90 at 8¢ — and about 60 cents underwater at 12¢. At the 18.3¢ US residential average it loses more than $10 a day. Home ASIC mining is a cheap-electricity hobby by definition.
Is Antminer hosting worth it instead of running at home?
Hosting moves your unit to a facility with industrial power rates, which is why most hosted machines exist. The tradeoffs: you pay the facility's margin on top of power, you eat its downtime, and you hand physical custody of a $3,000 machine to a company that could be slow to answer when something breaks. Get current per-kWh quotes in writing, compare against your own bill, and treat custody terms as part of the price.
Can you run an Antminer in a house?
Technically yes; practically it is hard. A modern unit draws 3,500 to 3,700 watts continuously — ten space heaters that never turn off — needs a dedicated 240V circuit, and produces around 75 dB, which is a vacuum cleaner running in whatever room it lives in. It also dumps every watt as heat, which your air conditioner pays for again in summer. Most home attempts end with the unit for sale within a few months.
