Volt-Watt-Ampere Calculator
Convert between volts, watts and amperes. For calculating electrical power. With current 2026 electricity prices, subsidies and comparison values.
Leistung (Watt)
2.300,00 W
Resistance (Ohm)
23,00 Ω
R = U / I
Calculation
P = U x I = 230 V x 10 A = 2.300 W
Formeln
Leistung
P = U x I (Watt)
Spannung
U = P / I (Volt)
Stromstärke
I = P / U (Ampere)
Widerstand
R = U / I (Ohm)
Typische Werte im Haushalt
Haushaltssteckdose: 230V, max. 16A = 3.680W
Starkstrom (Herd): 400V, 16A = 6.400W
USB-Ladeğerät: 5V, 2A = 10W
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
Frequently Asked Questions
How do volts, watts, and amperes relate to each other?
Watts equals volts times amperes (P = U x I). Volts measure electrical pressure, amperes measure current flow, and watts measure power consumption. For household outlets in Germany: 230V x 16A = 3,680W maximum.
What fuse size do I need?
Divide the device wattage by the voltage (230V in Germany) to find the required amperes. A standard household circuit uses 16A fuses, suitable for up to 3,680 watts.
What is the Volt-Watt-Ampere Calculator?
The volt-watt-ampere calculator converts between electrical voltage, power and current and computes the missing quantity.
How does the Volt-Watt-Ampere Calculator work?
Enter two of the three quantities: voltage (volts), current (amps) or power (watts). The calculator determines the third using the formula P = U * I.
Key Data and Facts
Formula: watts = volts * amps. Household mains Germany: 230 volts. 16 A fuse: max. 3,680 watts. Three-phase power: 400 volts, typically 32 A.
Step-by-Step Guide
So rechnen Sie zwischen Volt, Watt und Ampere um step by step: 1. Zwei bekannte Groessen enter: Spannung (Volt), Stromstaerke (Ampere) oder Leistung (Watt). 2. Formel anwenden: Watt = Volt x Ampere. Ampere = Watt / Volt. Volt = Watt / Ampere. 3. Typische Anwendungen: Sicherung pruefen: Eine 16-A-Sicherung bei 230 V traegt max. 16 x 230 = 3.680 Watt. Kabelquerschnitt bestimmen: calculate Sie erst den Strom, dann den nötigen Querschnitt. Geraet an USV anschliessen: Leistung des Geraets in Watt kennen, um die passende USV in VA zu choose. 4. Bei Drehstrom (400 V, 3 Phasen): P = Wurzel(3) x U x I x cos(phi). Fuer ohmsche Last (cos phi = 1): 400 V x 16 A x 1,732 = ca. 11.085 Watt. 5. Achtung bei VA und Watt: Bei Wechselstrom ist VA (Scheinleistung) nicht gleich Watt (Wirkleistung). Der Leistungsfaktor cos(phi) bestimmt das Verhaeltnis.
Calculation Example
Wasserkocher 2.200 W an 230 V: Strom = 2.200 / 230 = 9,57 Ampere. Passt auf eine 16-A-Sicherung (max. 3.680 W).
Related Calculators
Electricity Cost Calculator
Calculate the electricity costs for individual devices or the entire household per year. With current 2026 electricity prices, subsidies and comparison values.
Electricity Consumption Calculator 2026 — kWh per Year
How many kWh does your German household use? Average 2026: 1-person 1,500 kWh, 4-person 4,000 kWh. Compare with average and find savings at 36 ct/kWh.
Gas Consumption Calculator
Calculate your gas consumption and annual gas costs. Convert cubic meters to kilowatt hours. With current 2026 electricity prices, subsidies and comparison.
Electricity Calculator
General electricity calculator for consumption, costs and provider switching. With savings tips. Free online tool, includes 2026 reference values and savings.