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Antminer S21 Pro
Profitability Calculator

Real-time mining profit for Antminer S21 Pro. Adjust electricity cost and pool fee to see your exact daily earnings.

270 TH/sHashrate
3531WPower
15.1 J/THEfficiency

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ASIC ModelAntminer S21 Pro

Earnings Estimate

Based on current BTC price ~$120,000

Monthly Net Profit+$212.76
Daily Revenue$15.08
Daily Electricity−$8.10
Daily Net+$6.98
Break-even electricity$0.06/TH/day
Payback period~1.9 years
Electricity as % of revenue 54%
Get Hosting from $0.04/kWh

Overview

Antminer S21 Pro
ManufacturerBitmain
AlgorithmSHA-256
Target UseHosting / Industrial
Release Year2024
PositioningHigh efficiency flagship

The Antminer S21 Pro is Bitmain's 2024 flagship miner, delivering 270 TH/s at a record-low 15.1 J/TH. Designed for large-scale mining operations and professional hosting facilities, it represents the best ROI for high-volume deployments.

Technical Specifications

Hashrate270 TH/s
Power Consumption3531 W
Efficiency15.1 J/TH
AlgorithmSHA-256
Noise Level75 dB
CoolingAir
Dimensions400 × 195 × 290 mm
Weight14.4 kg

Profitability Breakdown

At $0.03/kWh, electricity consumes $8.10/day, leaving $6.98 net. Break-even at $0.06/kWh.

$0.02/TH/day
+$9.68
$0.03/TH/day
+$6.98
$0.04/TH/day
+$4.28
$0.05/TH/day
+$1.58
$0.06/TH/day
$-1.12

How Electricity Price Affects Antminer S21 Pro

Break-even electricity price$0.06/TH/day

Antminer S21 Pro efficiency of 15.1 J/TH means this model maintains profitability at competitive service rates in most market conditions — making it suitable for mid-tier hosting contracts.

Electricity rateStatus
Below $0.05/kWhProfitable
$0.05 – $0.06/kWhMarginal
Above $0.06/kWhUnprofitable
Learn about electricity costs for mining

Home Mining vs Hosting for Antminer S21 Pro

Home Mining
  • High electricity rates
  • 75 dB noise
  • Self-managed maintenance
  • Limited scalability
  • DIY cooling required
  • Full hardware control
ECOS HostingRecommended
  • Industrial rates $0.04–0.06/kWh
  • Zero noise concerns
  • Managed 24/7
  • Scale from 1 to 1000+ units
  • Professional cooling
  • Higher net profit margin

ROI and Payback Period

ROI calculator
Hardware Price$4,800
Monthly Profit $212.76
Break-even~1.9 years

ROI depends on BTC price and network difficulty. The full ROI Calculator lets you model bear-market and bull-market scenarios side by side.

Open ROI Calculator

Pros & Cons of Antminer S21 Pro

Pros
  • Top-tier efficiency at 15.1 J/TH
  • High hashrate shortens payback period
  • Strong secondary market resale value
  • Proven Bitmain reliability
Cons
  • High upfront cost (~$4,800+)
  • 3.5 kW draw requires dedicated circuit
  • 75 dB noise unsuitable for home use

Alternatives to Antminer S21 Pro

Antminer S19 XP

Antminer S19 XP

140 TH/s21.5 J/TH

Lower cost entry point with solid efficiency. Best for tighter hardware budgets.

View calculator
Whatsminer M60S

Whatsminer M60S

186 TH/s18.5 J/TH

MicroBT's flagship with competitive pricing and strong community support.

View calculator

Related Tools & Pages

Everything you need to make an informed mining decision

ASIC Profitability Calculator ROI Calculator Electricity & Energy Guide Mining Infrastructure Buy Mining Hardware

Frequently Asked Questions

Frequently Asked Questions

Have more questions about mining profitability?
At $0.06/kWh, Antminer S21 Pro currently generates ~$212.76/month net. Profitability depends on BTC price, difficulty, and your electricity rate. Use the calculator above to model your exact setup.
Antminer S21 Pro breaks even at $0.06/kWh at current BTC prices. Industrial hosting rates ($0.04–0.06/kWh) provide the healthiest margins.
Antminer S21 Pro runs at 75 dB and draws 3531W. Home mining requires low residential electricity rates and proper ventilation. Professional hosting is usually more cost-effective.
At current settings the estimated payback is ~1.9 years. Lower electricity costs and higher BTC prices shorten this significantly. ECOS hosting at $0.04/kWh can reduce payback by 20–40%.
Yes. Industrial hosting rates ($0.04–0.06/kWh) can increase net monthly profit by 30–60% compared to average residential rates. ECOS offers managed hosting with transparent pricing and 24/7 monitoring.