Raspberry Pi Power Draw & UPS Runtime Calculator

Save tool

Pick a board, add whatever hangs off it, and this page works out the steady power draw, how much headroom the supply keeps, and how long a battery would hold the system up. The watt figures per model are rough guideline values for a stock board; firmware, cooling and peripherals will shift them.

Raspberry Pi model (idle / full load)

CPU load share (%)

Power supply rating (W)

Extra consumers

Preset to add

Battery capacity given as

Battery capacity (mAh)

Cell voltage (V)

Converter efficiency (%)

Reserve time for a clean shutdown (s)