# Sense resistor / current shunt calculator

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You can enter values with SI suffixes like 12.2m (equivalent to 0.012) or 14k (14000) or 32u (0.000032).
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Too much power dissipation? You need to use a current sense amplifier ! See our Sense resistor / current shunt + current sense amplifier calculator !

This calculator allows you to find out which sense resistor you need to drop a specified voltage at a given current. Additionally it computes the power dissipated in the sense resistor.

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