Energy Calculators

Photovoltaics, heat pump and energy costs

Electricity Cost Calculator

Calculate the electricity costs for individual devices or the entire household per year.

Determine the electricity consumption of your household. Compare with the average.

Calculate your gas consumption and annual gas costs. Convert cubic meters to kilowatt hours.

General electricity calculator for consumption, costs and provider switching. With savings tips.

Calculate the yield and profitability of your solar system. With self-consumption, feed-in tariff and payback period.

Calculate the costs and savings of a heat pump. With COP, electricity costs, subsidies and comparison to gas/oil.

Find the right LED light as a replacement for your old bulb. Watt comparison and savings.

Convert between volts, watts and amperes. For calculating electrical power.

Calculate the required cooling capacity and electricity costs of an air conditioner for your room.

Calculate your personal CO2 footprint. Transport, housing, diet and consumption.