Electricity & Energy

Electricity and energy calculators for households, businesses and technical professionals. Calculate electricity costs, annual consumption, power savings from LED upgrades, solar yield estimates and more. Also includes Ohm's law calculator, cable length calculator, power factor calculator and other electrical engineering tools. Our free calculators help you understand and reduce your energy costs.

3 Converters
Popular: Stromkosten berechnen

Available Converters

Choose from 3 precise converters in the category "Electricity & Energy"

Calculate electricity costs

Calculate electricity costs: cost = power (kW) × time (h) × price (€/kWh). With ...

1.457x used

LED savings calculator

LED vs. incandescent bulb: calculate electricity savings and payback period. Wit...

1.450x used

Heating cost calculator

Calculate and compare heating costs: gas, oil, district heating, heat pump, pell...

440x used

Electricity & Energy - Costs, Consumption, Savings

Energy Calculators for Cost Overview

Electricity price Germany: approx. €0.40/kWh (2025). A refrigerator (150W × 24h × 365 days = 1,314 kWh/year = €526/year). LED vs. incandescent: 10W vs. 60W = 84% savings! Ohm's Law: U=R×I, P=U×I. Calculate electricity costs, consumption, savings. Reduce your energy costs!