Watt to Kilojoule 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 watts [W] to kilojoules per second [kJ/s] or kilojoules per second [kJ/s] to watts [W]. 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 watt [W] = 0.001 kilojoules per second [kJ/s]1 kilojoule per second [kJ/s] = 1,000 watts [W]

Convert watts to kilojoules per second

There are two simple ways to convert watts [W] to kilojoules per second [kJ/s]. In the first calculation method, the value in watts [W] is divided by 1,000. The second method multiplies the value in watts [W] by 0.001.

  • Kilojoules per second [kJ/s] = watts [W] ÷ 1,000
  • Kilojoules per second [kJ/s] = watts [W] * 0.001

Convert kilojoules per second to watts

Converting kilojoules per second [kJ/s] to watts [W] is easy and can be done in two ways. The first method involves multiplication, whereby the value in kilojoules per second [kJ/s] is multiplied by 1,000. The second variant is a division. Here, the value in kilojoules per second [kJ/s] is divided by 0.001.

  • Watts [W] = kilojoules per second [kJ/s] * 1,000
  • Watts [W] = kilojoules per second [kJ/s] ÷ 0.001

Converter

Decimal places

How it's calculated

Factor: 
1,000
Watts=Kilojoules per second*1,000
Kilojoules per second=
Watts1,000

To all available units

Watts

Kilowatts

Watts

Mechanical horsepower

Watts

Megawatts

Watts

Metric horsepower

Watts

Microwatts

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