Convert joules to watts

How to convert joules to watts?

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

You can calculate watts from joules and seconds, but you can't convert joules to watts, since joule and watt units represent different quantities.

Joules to watts calculation formula

The power P in watts (W) is equal to the energy E in joules (J), divided by the time period t in seconds (s):

P _(W) = E _(J) / t_(s)                        

So

Watt = joule / second

or                          

W = J / s

Example

What is the power consumption of an electrical circuit that has energy consumption of 90 joules for time duration of 3 seconds?

P _(W) = 90J / 3s = 30W

How to convert watts to joules?

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

You can calculate joules from watts and seconds, but you can't convert watts to joules since watt and joule units represent different quantities.

Watts to joules calculation formula

The energy E in joules (J) is equal to the power P in watts (W), times the time period t in seconds (s):

E _(J) = P _(W) × t_(s)

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 _(J) = 30W × 3s = 90J