15%
First purchase
On every new user’s first purchase. No limit on the purchase amount.
SHA-256
Antminer S21 Profitability Calculator
Real-time mining profit for Antminer S21. Adjust electricity cost and pool fee to see your exact daily earnings.
200 TH/sHashrate
3500WPower
17.5 J/THEfficiency
Configure Your Miner
Adjust parameters to match your setup
ASIC ModelAntminer S21
Earnings Estimate
Based on current BTC price ~$63,877.04
Monthly Net Profit+$2.86
Daily Revenue$5.89
Daily Electricity−$5.80
Daily Net+$0.09
Break-even electricity$0.03/TH/day
Payback period~113.6 years
Antminer S21 Overview
ManufacturerBitmain
AlgorithmSHA-256
Target UseHosting / Industrial
Release Year2024
PositioningCurrent-generation efficiency
The Antminer S21 is Bitmain’s next-generation SHA-256 Bitcoin miner, designed for high-efficiency BTC mining and professional hosting environments. With strong hashrate, improved energy performance, and reliable operation, it is a practical choice for miners who want to upgrade from older S19-series devices. For users checking Antminer S21 profitability, this model offers a strong balance of mining power, electricity efficiency, and long-term ROI potential.
Antminer S21 Specifications
Hashrate200 TH/s
Power Consumption3500 W
Efficiency17.5 J/TH
AlgorithmSHA-256
Noise Level75 dB
CoolingAir
Dimensions400 × 195 × 290 mm
Weight15.4 kg
Profitability Breakdown
At $0.029/kWh, electricity consumes $5.80/day, leaving $0.09 net. Break-even at $0.03/kWh.
$0.02/TH/day
+$1.89
$0.03/TH/day
$-0.11
$0.04/TH/day
$-2.11
$0.05/TH/day
$-4.11
$0.06/TH/day
$-6.11
Activate the TBB tariff and reduce electricity costs for this miner.
How Electricity Price Affects Antminer S21
Break-even electricity price$0.03/TH/day
Antminer S21 efficiency of 17.5 J/TH means this model keeps a healthier margin than older S19 units, but still benefits strongly from industrial hosting rates.
Electricity rateStatus
Below $0.02/kWhProfitable
$0.02 – $0.03/kWhMarginal
Above $0.03/kWhUnprofitable
Home Mining vs Hosting for Antminer S21
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
Hardware Price$3,900
Monthly Profit $2.86
Break-even~113.6 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 CalculatorPros & Cons of Antminer S21
Pros
- Modern efficiency
- Strong hashrate per unit
- Good hosting fit
- Better margin than older SHA-256 ASICs
Cons
- Higher upfront cost
- Requires managed power and cooling
- Less efficient than S21 Pro
Alternatives to Antminer S21
Related Tools & Pages
Everything you need to make an informed mining decision