Coulomb (C) to Ampere-hour (Ah) Conversion

Convert coulomb (c) to ampere-hour (ah) with precision. Enter values and get instant conversions.

About Coulomb (C) to Ampere-hour (Ah) Conversion

Converting from Coulomb (C) to Ampere-hour (Ah) is a common electric charge conversion.

This online converter allows you to easily convert between coulomb (c) and ampere-hour (ah), providing instant results with high precision.


Coulomb (C)

Definition: The coulomb (symbol: C) is the SI derived unit of electric charge, defined as the charge transported by a constant current of one ampere in one second (1C = 1A × 1s).

History: Named after Charles-Augustin de Coulomb. Adopted as part of the metric system in 1881, its definition is now tied to the ampere and second.

Current use: Fundamental to electrochemistry (Faraday's law), capacitor ratings, and particle physics (elementary charge is ~1.602×10⁻¹⁹ C).

Ampere-hour (Ah)

Definition: An ampere-hour (symbol: Ah) equals the charge transferred by one ampere flowing for one hour (1Ah = 3600C). A practical unit for battery capacity.

History: Developed in the early 20th century as battery technology advanced, providing a convenient measure for energy storage.

Current use: Standard unit for rating battery capacity in automotive, solar, and consumer electronics (e.g., smartphone batteries range 2-5Ah).

Details

  • From: Coulomb (C)
  • To: Ampere-hour (Ah)
  • Formula: 1 C = 0.0002777778 Ah
  • Example: 25 C = 0.0069444444 Ah

Coulomb (C) to Ampere-hour (Ah) Conversion Table

Coulomb (C)Ampere-hour (Ah)
0.010.0000027778
0.10.0000277778
10.0002777778
20.0005555556
30.0008333333
50.0013888889
100.0027777778
200.0055555556
500.0138888889
1000.0277777778
10000.2777777778

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