# convert joules to watts

6,346

First off, I think this kind of question might be better off on perhaps Physics.

Either way, it's important to remember that \$1 W = 1 J/s\$, so you can't directly convert between these units. Actually, \$J/s^2\$ seems more like an energy density unit while \$W/s^2\$ seems more like a typical unit of heat flux.

Assuming that concepts really aren't getting confused here, then you should be able to divide the \$J/m^2\$ measure by some appropriate length of time in seconds to find the relevant power flux.

For example, say that you have two compatible measurements:

\$A = 3600 J/m^2\$ for the course of 1 hour \$B = 2 W/m^2\$

Then

\$A/1 h = A/3600s = 1 (J/m^2)/s = 1 (J/s)/m^2 = 1 W/m^2\$

Perhaps something like this could be done, but you should probably consult with someone on the details to make sure that these two measurements aren't simply referring to different things altogether.

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### KatyB

Updated on January 16, 2020

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