Category · 10 calculators
Energy
Photovoltaics, heat pump, solar power, electricity costs and energy savings – energy calculators for households in Germany.
10 calculators
Electricity Cost Calculator Germany
Find out what an appliance costs to run in Germany: power in watts, daily usage and electricity price give consumption and cost per day, month and year.
Open calculator PopularElectricity Consumption Calculator 2026 — kWh per Year Germany
Estimate your household's yearly electricity use from household size and an appliance checklist, with annual and monthly costs and a German-average comparison.
Open calculator PopularGas Consumption Calculator Germany
Convert gas use from cubic metres to kWh with the conversion factor and calorific value from a German gas bill, then get yearly and monthly gas costs.
Open calculatorElectricity Calculator Germany
Compare two electricity tariffs in Germany: annual use, base and unit price give yearly and monthly costs, effective price per kWh and savings from switching.
Open calculatorPhotovoltaic Calculator Germany
See if a solar PV system pays off in Germany: size, cost, region, self-consumption and feed-in tariff give yield, savings, payback and CO2 saved.
Open calculatorHeat Pump Calculator 2026 — Costs, BEG Subsidy & Savings Germany
See if a heat pump pays off in Germany: area, building, old heating, pump type and energy prices give costs, 2026 BEG subsidy, savings, payback and CO2 saved.
Open calculatorLED Watt Calculator Germany
Find which LED replaces your old bulb: LED wattage, lumens and a conversion table, plus yearly and 10-year savings based on your electricity price in Germany.
Open calculatorVolt-Watt-Ampere Calculator Germany
Calculate watts, volts or amps from the other two values with P = U × I, plus resistance in ohms and typical German household values such as 230 V.
Open calculatorAir Conditioning Calculator Germany
Size an air conditioner for a room in Germany: area, height, windows, occupants and insulation give kW, BTU, recommended unit size and cost per season.
Open calculatorCO2 Footprint Calculator Germany
Work out your yearly CO2 footprint from heating, electricity, car, public transport, flights, diet and consumption, compared with the German average.
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