Electricity

Professional electrical calculators for engineers, electricians and students. Our tools cover Ohm's law, power calculations, cable cross-section sizing, voltage drop, resistance, capacitance, inductance and more. All calculators comply with DIN VDE standards and provide instant, accurate results. Perfect for planning electrical installations, verifying designs or solving technical problems in the field.

21 Converters
1.190 Conversions
Popular: Kabelquerschnitt-Rechner

Available Converters

Choose from 21 precise converters in the category "Electricity"

Cable Cross-Section Calculator

Calculate the required cable cross-section according to DIN VDE 0298-4 and DIN V...

12.235x used
Recommended

Voltage drop / cable length

Calculate voltage drop in electrical cables. Essential for safe electrical insta...

6.870x used
Recommended

Cable dimensioning

Calculates minimum cross-section and maximum cable length taking into account th...

6.393x used

VDE Voltage Drop Calculator

Calculate voltage drop in electrical cables per DIN VDE 0100-520. Check whether ...

6.171x used
Recommended

Capacitor calculator

Calculate charge and energy of a capacitor for a given capacitance and voltage.

4.281x used

Electrical power

Berechnet Wirk-, Schein- and Blindleistung for einphasige and dreiphasige Netze ...

4.247x used

Calculate maximum cable length

Calculate the maximum cable length for a given voltage drop. For safe electrical...

3.942x used

Resistance calculator

Calculates total resistance for series and parallel connection of up to 3 resist...

3.462x used

Inductance calculator

Calculates the magnetic energy and reactance of a coil for a given inductance, c...

3.411x used

Ohm's law

Ohm's law calculator: Calculate voltage, current, resistance and power. The basi...

3.075x used
Recommended

Three-phase power calculator

Calculate three-phase power: active power, apparent power and current using P = ...

2.640x used

Grounding resistance calculator

Calculate grounding resistance for rod, ring and plate electrodes per IEC 60364.

1.728x used

Transformer calculator

Calculate transformer: turns ratio, currents, losses and core cross-section.

1.671x used

Circuit breaker calculator

Size circuit breakers (MCB): rated current, trip curve B/C/D and cable check to ...

1.594x used

Reactive power compensation

Calculate reactive power compensation: improve cos φ, capacitor sizing and curre...

1.475x used

Cable Ampacity Calculator (with Grouping Factors)

Calculate permissible current-carrying capacity Iz per IEC 60364-5-52 methodolog...

1.014x used

Motor Calculator (Rated Current, Fusing, Supply Cable)

Calculate rated current, starting current, overload protection setting, back-up ...

911x used

Short-Circuit Current Calculator (Loop Impedance)

Calculate the prospective fault current Ik from the measured loop impedance Zs a...

880x used

PV String Calculator (Inverter Sizing)

Size PV strings correctly: check open-circuit voltage at low temperature against...

810x used

Lighting Calculator (Lumen, Lux, Number of Luminaires)

How many luminaires does the room need? Calculate luminous flux demand and numbe...

715x used

EV Charger Calculator (Charging Time, Cable, Fusing)

Calculate EV charging time plus supply cable cross-section, fusing and RCD requi...

700x used

Electrical Engineering - Professional Calculations

Electrical Calculators for Professionals

Ohm's Law, voltage drop, cable sizing! A 230V socket delivers up to 16A = 3,680 Watts. Too thin cables lead to voltage drop and fire hazard. Calculate cable cross-sections per VDE standards, electrical power, resistance. For safe electrical installations!