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Bitmain
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ASIC
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Sha256
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RELEASED JUN 2024
Bitmain Antminer S21 Pro (234TH) — ROI calculator
Profit /day
$1.92
Income /day
$10.39
0.00010824 BTC/day
Cost $8.47 @ $0.1/kWh
Hashrate
234Th/s
Sha256
Power · Efficiency
3531.0W
15.09 j/Th
Bitmain Antminer S21 Pro (234TH) makes up to $1.92 a day, best on Sha256 hashpower sale. Also available: mining Sha256 at 234 Th/s ($0.25/day). Pulling 3,531 W from the wall — at $0.10/kWh, profitable at today's rates.
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5 minutes ago
Similar miners ↓
Tap to switch · 7 sections ROI calculator 6/7
ROI calculator
ROI calculator for Bitmain Antminer S21 Pro (234TH)
Model payback, electricity, and first-year return for this rig.
Hardware cost
$5,000
Electricity rate
$0.10/kWh
Runtime per day
24
Pool fee
2.0%
Difficulty growth /yr
+0%
Net profit /day
$0.00
after electricity & fees
Payback period
—
—
First-year return
$0
—
Projected cumulative profit
The line crosses $0 on the day you break even. Everything above is pure profit.
Monthly P&L · 3-year horizon
Capital cost is booked in month 1. Cumulative columns include the rig purchase, so Net goes positive at true breakeven.
| Month | Earned (mo) | Cost burned (mo) | Cumulative earned | Cumulative cost | Net | % ROI |
|---|
Profit vs cost
profit 2.87%
cost 97.13%
Tap to switch · 7 sections ROI calculator 6/7
ROI calculator
ROI calculator for Bitmain Antminer S21 Pro (234TH)
Model payback, electricity, and first-year return for this rig.
Hardware cost
$5,000
Electricity rate
$0.10/kWh
Runtime per day
24
Pool fee
2.0%
Difficulty growth /yr
+0%
Net profit /day
$0.00
after electricity & fees
Payback period
—
—
First-year return
$0
—
Projected cumulative profit
The line crosses $0 on the day you break even. Everything above is pure profit.
Monthly P&L · 3-year horizon
Capital cost is booked in month 1. Cumulative columns include the rig purchase, so Net goes positive at true breakeven.
| Month | Earned (mo) | Cost burned (mo) | Cumulative earned | Cumulative cost | Net | % ROI |
|---|
Frequently asked
About the Bitmain Antminer S21 Pro (234TH)
Is the Bitmain Antminer S21 Pro (234TH) profitable?
As of October 2026, the Bitmain Antminer S21 Pro (234TH) earns $0.25/day mining Sha256 at an electricity cost of $0.1/kWh. Yes, it is currently profitable.
What is the payback period for the Bitmain Antminer S21 Pro (234TH)?
Payback equals hardware cost divided by daily profit. The ROI calculator on this page projects payback months for the Bitmain Antminer S21 Pro (234TH) at $0.1/kWh — adjust the electricity rate and the hardware cost to match your scenario. Most miners aim for 12–24 month payback on new hardware.
What's the break-even electricity rate for the Bitmain Antminer S21 Pro (234TH)?
Break-even electricity is the rate above which the Bitmain Antminer S21 Pro (234TH) stops being profitable. The calculator below derives it from the rig's revenue and power draw — anything below this rate yields positive daily profit, anything above turns the rig into a net loss.
