How to Convert Watts to Joules

How to convert power in watts (W) to energy in joules (J).

Watts to joules calculation formula

The energy E in joules is equal to the power P in watts, times the time period t in seconds:

E = P × t

So

joules = watts × seconds

Or

J = W×s

Example

What is the energy consumption of an electrical circuit that has power consumption of 30 watts for time duration of 3 seconds?

E = 30W × 3s = 90J

 

How to convert Joules to Watts ►

 

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See also

• Watts to Joules calculator
• How to convert Joules to Watts
• Watt
• Electrical calculation
• Power conversion
• Energy conversion