4 TOOLS · ONE CLEAR STARTING POINT

Electrical conversions

Convert electrical quantities with the units and assumptions made explicit.

4 calculators

Conversions

Amp-Hour

Connect current, capacity and time.

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Watt-Hours to Amp-Hours

Translate battery capacity units.

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Watt-Hours

Turn power over time into energy.

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Watts, Volts & Amps

Solve power, voltage or current.

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Clear assumptions, not false certainty.

All tools include a formula, a worked example and the limits of the estimate. Read our methodology.