Utilnaro
Category: Converters

Electric Charge Converter

Convert coulombs, ampere-hours and mAh.

Runs in your browserProcessed locally. Your input never leaves your device.

Converting Electric charge.

Convert from
Convert to

You can type here too — it converts the other way.

1 mAh = 0.001 Ah

Exact by definition

mAh is charge, not energy. Converting a battery to watt-hours needs its voltage, which this tool does not assume.

The same value in other units

coulomb
3.6 C
Settings

Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.

Convert a whole list

Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.

Details

About this tool

Converts between coulombs and ampere-hours, including the milliamp-hours printed on every battery. One ampere-hour is exactly 3600 coulombs.

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Good to know

Questions people actually ask

How do I convert mAh to Wh?
You need the battery's voltage: watt-hours are amp-hours times volts. A 5000 mAh cell at 3.7 V holds 18.5 Wh, but at 5 V it would be 25 Wh - which is why this converter reports charge only and refuses to guess the voltage.