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โšกElectric Charge Converter

Convert Ampere-hour to Coulomb

Live bidirectional calculator for Ampere-hours (Ah) and Coulombs (C) with verified formula and conversion charts.

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Electric Charge8 units

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How the Calculation Works (Linear Scaling)

Formula:
Coulomb = Ampere-hour ร— 3600
Substitution:1 ร— 3600
Calculated Result:3600 C

Since 1 Ampere-hour = 3600 Coulombs, multiply the value in Ampere-hours by 3600.

Standard Ratio Factor:1 Ah = 3600 C

Ampere-hour to Coulomb Conversion Table

Precomputed values for quick reference and printing.

Ampere-hour โ†’ Coulomb(Ah โ†’ C)
Ampere-hourCoulomb
1 Ah3600 C
2 Ah7200 C
3 Ah10800 C
4 Ah14400 C
5 Ah18000 C
6 Ah21600 C
7 Ah25200 C
8 Ah28800 C
9 Ah32400 C
10 Ah36000 C
15 Ah54000 C
20 Ah72000 C
25 Ah90000 C
30 Ah108000 C
40 Ah144000 C
50 Ah180000 C
75 Ah270000 C
100 Ah360000 C
Coulomb โ†’ Ampere-hour(C โ†’ Ah)
CoulombAmpere-hour
1 C0.0003 Ah
2 C0.0006 Ah
3 C0.0008 Ah
4 C0.0011 Ah
5 C0.0014 Ah
6 C0.0017 Ah
7 C0.0019 Ah
8 C0.0022 Ah
9 C0.0025 Ah
10 C0.0028 Ah
15 C0.0042 Ah
20 C0.0056 Ah
25 C0.0069 Ah
30 C0.0083 Ah
40 C0.0111 Ah
50 C0.0139 Ah
75 C0.0208 Ah
100 C0.0278 Ah

๐Ÿ“Œ Standard Benchmark Reference Values

1 Ah=3,600 C

Standard battery capacity definition (1 ampere continuously for 3,600 seconds).

Exact Ratio

About Ampere-hour (Ah)

Unit of electric charge equal to the charge transferred by a steady current of one ampere flowing for one hour (3,600 C).

History: Long-standing international electrical industry standard for electrochemical battery energy storage capacity.

Common Uses: Automotive lead-acid battery capacity, deep-cycle solar storage, and marine battery ratings.

About Coulomb (C)

The SI base unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere (1 C = 1 Aยทs).

History: Named after French physicist Charles-Augustin de Coulomb who formulated Coulombโ€™s law of electrostatic force in 1785.

Common Uses: Standard measure of electrostatic charge, capacitor stored charge (Q = CV), and chemical electroplating.

โ“ Frequently Asked Questions

How many Coulombs are in 1 Ampere-hour?

There are exactly 3600 Coulombs in 1 Ampere-hour (1 Ah = 3600 C).

What is the formula to convert Ampere-hour to Coulomb?

The formula is: Coulomb = Ampere-hour ร— 3600. Since 1 Ampere-hour = 3600 Coulombs, multiply the value in Ampere-hours by 3600.

How do I convert 1 Ah to C manually?

To convert 1 Ah to C: apply the formula Coulomb = Ampere-hour ร— 3600. Substituting gives: 1 ร— 3600 = 3600 C.