Sense resistor power dissipation calculator

TechOverflow calculators:
You can enter values with SI suffixes like 12.2m (equivalent to 0.012) or 14k (14000) or 32u (0.000032).
The results are calculated while you type and shown directly below the calculator, so there is no need to press return or click on a Calculate button. Just make sure that all inputs are green by entering valid values.

Too much power dissipation? You need to use a current sense amplifier ! See our Sense resistor / current shunt + current sense amplifier calculator !

Want to calculate the correct sense resistor value for your desired sense voltage? See Sense resistor / current shunt calculator

This calculator allows you to find out how much power your sense resistor will dissipate and how much voltage it will drop at a given current.



R_{text{sense}} = frac{U_{text{drop}}}{I_{text{sense}}} P_{text{sense}} = I_{text{sense}}² cdot R_{text{sense}}