Mining Profitability Comparator
Enter your electricity rate and instantly see which Bitcoin ASIC miners are profitable — ranked by daily earnings, with payback period, efficiency, and break-even power cost for every model.
| Miner | Efficiency (J/TH) ↕ |
Daily Revenue ↕ |
Daily Power Cost ↕ |
Daily Profit ↕ |
Monthly Profit ↕ |
Break-even $/kWh ↕ |
Payback (days) ↕ |
|---|
Ready to buy? Compare prices on miners we've used ourselves.
Once you've found the model that pencils out at your electricity rate, check these retailers for current pricing and availability:
Affiliate disclosure: these links may earn us a small commission at no extra cost to you. We only link to retailers we'd use ourselves.
How to use this comparator
Set your electricity rate in the inputs above — that single number is the biggest driver of which miner wins for you. The table re-sorts instantly as you type. Every other number (BTC price, difficulty) loads live from the blockchain and can be overridden if you want to model a specific scenario.
What each column means
Efficiency (J/TH) — Joules per terahash. How much electricity the miner burns per unit of hashrate. Lower is better, and it's the one spec that doesn't change with BTC price. An efficient miner stays profitable longer as difficulty rises or price drops.
Daily Revenue — Gross earnings in USD based on your hashrate's share of the block reward at the current BTC price. This is before electricity costs.
Daily Power Cost — Your electricity bill for running the miner 24 hours at the uptime and $/kWh you entered.
Daily Profit — Revenue minus power cost. Positive (green) means the miner is covering its electricity. Negative (red) means you're losing money on power every day, not counting hardware cost.
Monthly Profit — Daily profit × 30 days. A quick sanity check against your monthly power bill.
Break-even $/kWh — The maximum electricity rate at which the miner is still profitable at today's BTC price. If your rate is above this number, the miner loses money on power regardless of hardware cost.
Payback (days) — How many days of profit it takes to recover the hardware purchase price. Based on current daily profit — if the miner is currently losing money, payback shows "never."
Why electricity rate matters more than hashrate
A higher-hashrate miner isn't automatically better — it also draws more power. The M66S at 298 TH/s pulls 5,513 W, while the S21 Pro at 234 TH/s pulls 3,531 W. At $0.05/kWh both are profitable, but at $0.12/kWh the M66S's power bill can eat into its hashrate advantage. The comparator shows you exactly where each model crosses from profit to loss at your rate.
How the math works
Daily BTC mined for each miner: (miner hashrate ÷ network hashrate) × 144 blocks × 3.125 BTC × uptime × (1 − pool fee)
Network hashrate is derived from current difficulty: difficulty × 2³² ÷ 600 seconds
Break-even $/kWh: (daily BTC × BTC price) ÷ (power kW × 24h) — the electricity rate where daily revenue exactly covers daily power cost.
Payback: hardware cost ÷ daily profit. Hardware costs shown are approximate street prices as of early 2026. Use the ROI Calculator to enter your exact purchase price.
Frequently asked questions
Why does the "best" miner keep changing?
Because profitability depends on three volatile inputs: BTC price, network difficulty, and your electricity rate. A miner that's most profitable today might rank differently next month if difficulty increases or price drops. That's why break-even $/kWh is the most stable metric — it tells you how much headroom you have before a miner stops paying for its own electricity, regardless of current price.
What electricity rate should I enter?
Use your actual blended rate from your power bill — total cost divided by kWh used. If you're at a hosting facility, use the all-in rate they quote you (some quote power-only, others include a management fee). Residential rates in the US typically run $0.10–$0.18/kWh. Industrial or hosting rates range from $0.04–$0.09/kWh. Your rate is the single biggest variable in whether a miner is viable.
Are hardware prices current?
Prices shown are approximate secondary-market estimates as of early 2026 and are used only for the payback calculation. ASIC prices fluctuate significantly with BTC price — they tend to rise when BTC rises and fall during bear markets. For current prices, check the affiliate links above or your preferred retailer. You can get exact payback figures by entering your actual purchase price in the ROI Calculator.
Why is the S21 Hydro ranked lower than smaller miners sometimes?
The S21 Hydro has a very high total power draw (5,360 W) due to its liquid cooling system. At higher electricity rates, that power bill outweighs its hashrate advantage. It's designed for large-scale operations with cheap industrial power — typically under $0.05/kWh. At home rates it often ranks below air-cooled models.
What's the difference between this tool and the ROI Calculator?
This comparator is for the shopping phase — comparing many miners at once to find which ones make sense at your electricity rate. The ROI Calculator is for deep analysis on a single miner you're seriously considering — it adds a sensitivity table across BTC price and difficulty scenarios, exact hardware cost input, and break-even difficulty tracking.
Does this account for rising difficulty?
The table uses current difficulty, so it shows today's profitability. Bitcoin difficulty has trended upward over time as more miners join the network. A miner that's profitable today may become unprofitable if difficulty rises significantly and BTC price doesn't keep pace. The break-even $/kWh column helps you gauge how much margin you have — the higher it is above your actual rate, the more difficulty headroom you have.
About this tool
Built by Chris Johnson at Faith Mining LLC — a real mining operator who built this because spreadsheet-comparing miners before a purchase is tedious and the free tools online hide too many assumptions. Everything here uses the same math I use for my own decisions.
Also check the Bitcoin Miner ROI Calculator for single-miner deep analysis, and the Hashrate Converter for quick unit conversions.
Questions or feedback? Email info@faithmining.net — it gets read.