Kilojoule per hour to Joule per second Converter (and vice versa)

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

This converter allows you to convert kilojoules per hour [kJ/h] to joules per second [J/s] or joules per second [J/s] to kilojoules per hour [kJ/h]. 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 kilojoule per hour [kJ/h] ≈ 0.2778 joules per second [J/s]1 joule per second [J/s] = 3.6 kilojoules per hour [kJ/h]

Convert kilojoules per hour to joules per second

There are two simple ways to convert kilojoules per hour [kJ/h] to joules per second [J/s]. In the first calculation method, the value in kilojoules per hour [kJ/h] is divided by 3.6. The second method multiplies the value in kilojoules per hour [kJ/h] by the rounded conversion factor of 0.2778.

  • Joules per second [J/s] = kilojoules per hour [kJ/h] ÷ 3.6
  • Joules per second [J/s] ≈ kilojoules per hour [kJ/h] * 0.2778

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


Convert joules per second to kilojoules per hour

Converting joules per second [J/s] to kilojoules per hour [kJ/h] is easy and can be done in two ways. The first method involves multiplication, whereby the value in joules per second [J/s] is multiplied by 3.6. The second variant is a division. Here, the value in joules per second [J/s] is divided by the rounded conversion factor of 0.2778.

  • Kilojoules per hour [kJ/h] = joules per second [J/s] * 3.6
  • Kilojoules per hour [kJ/h] ≈ joules per second [J/s] ÷ 0.2778

The rounded conversion value can cause rounding errors, resulting in inaccurate calculation results. To ensure that the conversion from joules per second [J/s] to kilojoules per hour [kJ/h] 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: 
3.6
Kilojoules per hour=Joules per second*3.6
Joules per second=
Kilojoules per hour3.6

To all available units

Kilojoules per hour

Megawatts

Kilojoules per hour

Metric horsepower

Kilojoules per hour

Microwatts

Kilojoules per hour

Milliwatts

Kilojoules per hour

Nanowatts

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