Conversion Tools calculator
Electrical Unit Converter
This page is the consolidated electrical unit-conversion entry point for eight supported unit families: voltage, current, power, energy, resistance, capacitance, inductance, and frequency. It keeps same-family scale checks fast: 5000 mV = 5 V, 2 kW = 2.682 hp, and 100 kWh = 360 MJ. For formula conversions such as amps to watts, watts to amps, kVA to amps, or motor HP to kW and current, use the linked calculators that ask for voltage, phase, power factor, efficiency, and load basis.
Updated July 10, 2026
5000 mV = 5 V, 2 kW = 2.682 hp, and 100 kWh = 360 MJ in the supported electrical unit families on this page.
Supported families only: voltage, current, power, energy, resistance, capacitance, inductance, and frequency.
Choose the unit family below, then select the source and target units for a direct electrical conversion
How to Use
Supported Electrical Unit Families
The converter handles eight groups of units that show up repeatedly in electrical work:
- Voltage: uV, mV, V, kV, MV
- Current: uA, mA, A, kA
- Power: mW, W, kW, MW, GW, hp, BTU/h
- Energy: J, kJ, MJ, Wh, kWh, MWh, BTU, cal, kcal
- Resistance: mOhm, Ohm, kOhm, MOhm
- Capacitance: F, mF, uF, nF, pF
- Inductance: H, mH, uH, nH
- Frequency: Hz, kHz, MHz, GHz
Example Conversions
5000 mV = 5 V
2 kW = 2.682 hp
100 kWh = 360 MJ
What This Page Does Not Convert
This page does not convert RMS to peak values, wire gauge to mm2, temperature scales, illumination units, or electrical formulas that cross between different quantities. Use the dedicated sibling tools when the task is wire gauge conversion, temperature conversion, or a circuit calculation rather than a straight unit change.
Conversion Paths That Need a Calculator
Use the unit converter when the source and target are in the same unit family. Use a calculator when the question crosses quantities or depends on operating conditions:
- Amps to watts or watts to amps: use the Power Calculator because voltage, phase, and power factor change the result.
- kVA to amps: use the Transformer Calculator or the power calculator when apparent power, voltage, and phase must stay with the current result.
- HP to kW, HP to amps, or motor current: use the Motor Current Calculator when efficiency, power factor, nameplate FLA, or NEC table FLC matter.
Why Consistent Units Matter
Most unit mistakes are simple scale errors: mV vs V, kW vs W, or kWh vs MJ. A direct converter is useful because the math is exact but the context changes quickly between drawings, equipment data, reports, and field notes. The page keeps the conversion limited to the unit families it actually supports so the result stays predictable.
Common Applications
More applications. Open to review 4 additional use cases.
Frequently Asked Questions
What unit families does this converter actually support?
The page supports voltage, current, power, energy, resistance, capacitance, inductance, and frequency. It stays inside those eight families rather than pretending to cover every engineering conversion on the site.
Can I use this page for horsepower and BTU per hour conversions?
Yes. The power mode includes horsepower and BTU/h along with watts and SI multiples, so it can handle direct conversions such as kW to hp or W to BTU/h.
Does the converter handle wire gauge or RMS to peak conversions?
No. Those are different workflows. Use the dedicated wire-gauge or electrical-formula tools when you need AWG conversion, RMS-to-peak relationships, or a circuit calculation.
Should I use this page for amps to watts, watts to amps, kVA to amps, or HP to kW?
Use this page only for same-family unit conversion. Use the power calculator for amps-to-watts or watts-to-amps formulas, the transformer calculator for kVA-to-amps current checks, and the motor-current calculator when HP, kW, efficiency, power factor, NEC FLC, or nameplate FLA affect the result.
Why does the page also show a few common equivalents?
The calculator returns the requested target unit first, then shows a few nearby equivalents from the same unit family so you can cross-check the scale without re-entering the value.
Related Calculators
Power Calculator
Solve DC, single-phase AC, and balanced three-phase power relationships from voltage, current, power factor, and power values.
Motor Current Calculator
Estimate formula running current from HP or kW, voltage, efficiency, and power factor, then compare against NEC table FLC when needed.
Transformer Calculator
Screen transformer kVA, turns ratio, full-load current, losses, and a basic impedance-based fault-current check.
Ohm's Law Calculator
Calculate voltage, current, and resistance
Wire Gauge Converter
Convert between AWG, mm², and circular mils for conductor sizing and documentation.
Temperature Converter
Convert absolute temperatures and temperature differences between C, F, K, and R for electrical reference work.