Watt Converter
Created by: tinycalcs.com/en
Number of supported units: 24
Last update: 2026
The Watt Converter supports 24 different power units. This makes it possible to convert freely between watts [W], metric, Anglo-American, and other power units. All power values are converted in real time and displayed with up to 20 decimal places, ensuring sufficient accuracy.
Conversion of watts
In order to convert watts [W] into another unit of measurement, a conversion value is required. This value can be determined using a conversion table. However, the table is relatively large, confusing, and difficult for inexperienced users to understand. The tool below provides a solution to this problem by allowing the rounded conversion values for watts [W] to be queried directly from the conversion table.
Determine conversion factor
Conversion between watts and milliwatts
A quick and precise conversion between watts [W] and milliwatts [mW] is straightforward and requires only multiplication or division by 1,000. The conversion from watts [W] to milliwatts [mW] is done by multiplying the value in watts [W] by 1,000. To reverse the conversion, divide the value in milliwatts [mW] by 1,000 to obtain watts [W].
- Milliwatts [mW] = watts [W] * 1,000
- Watts [W] = milliwatts [mW] ÷ 1,000
Conversion between watts and kilowatts
Conversions between watts [W] and kilowatts [kW] are straightforward and can be performed with simple math. The required conversion factor is 1,000. To convert a value from kilowatts [kW] to watts [W], multiply the number of kilowatts [kW] by 1,000. For values in watts [W], divide by 1,000 to get the equivalent in kilowatts [kW].
- Watts [W] = kilowatts [kW] * 1,000
- Kilowatts [kW] = watts [W] ÷ 1,000
Conversion between watts and metric horsepower
You can easily convert between metric horsepower [PS] and watts [W] using the formulas provided below. For accurate results, it is important to follow the correct order of mathematical operations.
- Watts [W] = metric horsepower [PS] * 735.49875
- Metric horsepower [PS] = watts [W] ÷ 735.49875
Conversion between watts and mechanical horsepower
The fastest and easiest way to convert between mechanical horsepower [hp(I)] and watts [W] is to use the converter above. Manual conversions are also possible and can be done using the formulas provided below.
- Watts [W] = mechanical horsepower [hp(I)] * 27.2155422 * 27.3997801
- Mechanical horsepower [hp(I)] = watts [W] ÷ 27.2155422 ÷ 27.3997801
Conversion between watts and kilojoules per minute
The two formulas below provide an easy way to convert between watts [W] and kilojoules per minute [kJ/min]. To ensure precise conversion results, it is important to follow the correct order of math operations.
- Kilojoules per minute [kJ/min] = watts [W] * 0.06
- Watts [W] = kilojoules per minute [kJ/min] ÷ 0.06
Watt
Decimal places
Common units
Further units
Other units converter
Centiwatts
Decawatts
Deciwatts
Electrical horsepower
Gigawatts
Popular with other users …
Pressure
Pressure is often measured in bar, psi, or pascals. The pressure converter makes converting between different pressure units a breeze, ensuring that the results are accurate and precise.
Pressure converter
Resistance
Manually converting between different units of electrical resistance can often be confusing and prone to errors. The resistance converter eliminates the complexity and provides accurate and error-free results.
Resistance converter
Speed
Whether you want to convert meters per second, knots, or kilometers per hour, the speed converter allows you to quickly and accurately convert all internationally recognized speed units.
Speed converter
Temperature
Manual conversion of temperature scales often results in calculation errors, as special calculation rules must be followed. Using the temperature converter is much easier and ensures fast and error-free results.
Temperature converter