Free calculator
Energy Cost Calculator
Estimate electricity consumption and operating cost from power, operating time, and tariff.
Enter your values above.
No information is sent to a server. Calculations run in your browser.
How it works
Energy (kWh) = power (kW) × hours. Cost = energy × unit price. This assumes constant input power and excludes demand charges, taxes, and tariff tiers.
Worked example
A 5 kW machine running 8 hours at $0.15/kWh costs $6 in electricity.
Important limitations
Results depend on your input assumptions. Check your units and validate important business decisions against actual operating data.