Bitmain Antminer S21 Pro (245Th)
$3.96
Daily profit
$8.99
Income / dayat today's BTC price and difficulty
−$5.03
Electricity / day88.2 kWh a day · $0.057/kWh
$1,911
Best price · ROI 483 days
Income vs electricity · Mines BTC · 245 TH/s · 3,675 W · SHA-256
| Income | Electricity | Profit | |
|---|---|---|---|
| Day | $8.99 | −$5.03 | $3.96 |
| Week | $62.92 | −$35.19 | $27.73 |
| Month | $269.65 | −$150.82 | $118.83 |
| Year | $3,281 | −$1,835 | $1,446 |
Where to buy
| Seller | Ships from | Availability | ROI | Price | |
|---|---|---|---|---|---|
| China | In stock | 483 days | $1,911 | $1,911View offer → | |
| United States | In stock | 581 days | $2,299 | $2,299View offer → | |
| United Kingdom | In stock | 639 days | $2,529 | $2,529View offer → | |
| United Arab Emirates | In stock | 672 days | $2,660 | $2,660View offer → |
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Price history
━ Average price ━ Lowest price
Specifications
ManufacturerBitmain
ModelBitmain Antminer S21 Pro (245Th)
Also known asAntminer S21 Pro
ReleaseNov 2025
AlgorithmSHA-256
Hashrate245 TH/s
Power3,675 W
Efficiency15.0 J/TH
Noise75 dB
Size400 × 195 × 290 mm
InterfaceEthernet
Temperature5–45 °C
Humidity5–95 %
Mineable coins
BCH
BSV
BTC
FB
NMC
PPC
QUAI
XECAbout this miner
The Bitmain Antminer S21 Pro (245Th) is an ASIC miner by Bitmain for the SHA-256 algorithm, rated at 245 TH/s on 3,675 W. It came out in November 2025. At 15.0 J/TH it is 43% more efficient than the median SHA-256 miner we track (26.4 J/TH). At $0.057/kWh it ranks #57 of 247 SHA-256 miners by daily profit, earning about $3.96 a day mining BTC. The best price on AsicProfit is $1,911. At today's rates it would pay for itself in about 483 days. At 75 dB it belongs in a dedicated mining site or hosting facility.
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