Estimate energy consumption and cost from power, operating time, duty cycle and your own tariff.
Your inputs stay on your device. All calculations run in your browser without uploading, storing or tracking the numbers you enter. Clear formulas and visible assumptions let you review the estimate.
Energy (kWh) = kW × hours/day × days × duty/100. Cost = energy × price/kWh.
Duty cycle is the fraction of the stated hours running at the supplied power. Use 100% for already averaged power. Flat tariff only; fixed charges, taxes and tiers are excluded.
Decimal arithmetic uses exact fractions. Currency displays round to two decimals; exact unrounded values are included where relevant. Date calculations use whole Gregorian calendar days. Results are estimates under the stated assumptions.
No. Inputs are processed locally and not persisted. Only the theme preference is stored. Copy and report downloads happen when you choose them.
