Power Density Calculator

Calculate average power divided by stated die area.

Important: This calculator is for educational and estimation purposes only. It is not semiconductor design, manufacturing, process, yield, thermal, or professional engineering advice.

About the Power Density Calculator

This tool spreads stated power uniformly over a geometric die area.

How to use it

Enter nonnegative power.
Enter positive die area.
Calculate W/mm² and W/cm².

Formula

Power density equals watts divided by area.

Example

100 W over 200 mm² equals 0.5 W/mm² or 50 W/cm².

Notes

Real heat distribution is not uniform; this value must not be used as a thermal design result.