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Idle electricity cost calculator

Estimate electricity use from your own power and price assumptions. No login or account access needed.

Defaults are illustrative. Replace each with your own assumptions.

Your estimate

Enter your assumptions, then calculate.

This estimates electricity only. It does not measure your PC or its complete ownership cost.

Energy (kWh) = (watts ÷ 1000) × daily hours × days
Electricity cost = energy × price per kWh

Compare current USD plan prices

Plan prices use USD. No exchange rate or Lifetime amortization is assumed.