Kilowatt to Joule per hour Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert kilowatts [kW] to joules per hour [J/h] or joules per hour [J/h] to kilowatts [kW]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 kilowatt [kW] = 3,600,000 joules per hour [J/h]1 joule per hour [J/h] ≈ 2.778 * 10-7 kilowatts [kW]

Convert kilowatts to joules per hour

There are two simple ways to convert kilowatts [kW] to joules per hour [J/h]. In the first calculation method, the value in kilowatts [kW] is divided by the rounded conversion factor of 2.778 * 10-7. The second method multiplies the value in kilowatts [kW] by 3,600,000.

  • Joules per hour [J/h] ≈ kilowatts [kW] ÷ (2.778 * 10-7)
  • Joules per hour [J/h] = kilowatts [kW] * 3,600,000

The calculation method with a rounded conversion value is more suitable for rough conversions from kilowatts [kW] to joules per hour [J/h], as the calculation result may contain rounding errors. Therefore, the variant with the exact conversion factor is more suitable.


Convert joules per hour to kilowatts

Converting joules per hour [J/h] to kilowatts [kW] is easy and can be done in two ways. The first method involves multiplication, in which the value in joules per hour [J/h] is multiplied by the rounded conversion factor of 2.778 * 10-7. The second variant is a division. Here, the value in joules per hour [J/h] is divided by 3,600,000.

  • Kilowatts [kW] ≈ joules per hour [J/h] * 2.778 * 10-7
  • Kilowatts [kW] = joules per hour [J/h] ÷ 3,600,000

The rounded conversion value can cause rounding errors, resulting in inaccurate calculation results. To ensure that the conversion from joules per hour [J/h] to kilowatts [kW] produces the most accurate calculation result possible, the conversion should be performed using the exact conversion factor.

Converter

Decimal places

How it's calculated

Factor: 
3,600,000
Joules per hour=Kilowatts*3,600,000
Kilowatts=
Joules per hour3,600,000

To all available units

Kilowatts

Joules per minute

Kilowatts

Joules per second

Kilowatts

Kilocalories per hour

Kilowatts

Kilocalories per minute

Kilowatts

Kilocalories per second

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