Power Cost Calculator
See exactly what your miner costs to run based on wattage and your electricity rate.
Single Miner Cost Calculator
Quick presets:
Compare Common Home Miners - Adjust Rate
| Miner | Hashrate | Power | Efficiency | $/Month | $/Year |
|---|
How electricity cost is calculated
The formula is straightforward: Power (kW) × Hours × Rate ($/kWh) = Cost. Convert watts to kilowatts by dividing by 1,000. A 140W miner running 24 hours at $0.14/kWh costs: (140 ÷ 1000) × 24 × $0.14 = $0.4704/day = ~$14.11/month.
The J/TH (joules per terahash) efficiency metric tells you how much energy it takes to produce one terahash of mining work. Lower is better - industrial-grade miners run 17-21 J/TH, while older hardware can be 60+ J/TH.
Note: This calculator shows electricity cost only. It does not include pool fees, hardware depreciation, internet, or cooling costs. For full profitability analysis including Bitcoin revenue, you'll need to factor in current network difficulty and BTC price - which change daily.
Also see: Is home Bitcoin mining worth it? for a deeper look at the economics with real numbers from my setup.