Conversions

Electric charge converter

Convert coulombs, amp-hours, milliamp-hours and elementary charges.

Electric charge converter
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Uses coulombs. One ampere hour is 3,600 C and one milliampere hour is 3.6 C. The positive elementary-charge magnitude e is exactly 1.602176634 × 10⁻¹⁹ C. Signed charge is retained; mAh alone does not specify battery energy. Values are rounded to 12 significant figures for display.

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Worked example

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Amount to convert
1000
From
Milliampere hours (mA·h)
To
Coulombs (C)

Example result

Converted amount (C)
3,600

1,000 mA·h = 3,600 C