Ampere-Hours to Coulombs Conversion (Ah to C)

Ampere-Hours to Coulombs Converter

Enter the electric charge in ampere-hours below to convert it to coulombs.

Result in Coulombs:

1 Ah = 3,600 C

How to Convert Ampere-Hours to Coulombs

To convert a measurement in ampere-hours to a measurement in coulombs, multiply the electric charge by the following conversion ratio: 3,600 coulombs/ampere-hour.

Since one ampere-hour is equal to 3,600 coulombs, you can use this simple formula to convert:

coulombs = ampere-hours × 3,600

The electric charge in coulombs is equal to the electric charge in ampere-hours multiplied by 3,600.

For example, here's how to convert 5 ampere-hours to coulombs using the formula above.

coulombs = (5 Ah × 3,600) = 18,000 C

How Many Coulombs Are in an Ampere-Hour?

There are 3,600 coulombs in an ampere-hour, which is why we use this value in the formula above.

1 Ah = 3,600 C

Ampere-hours and coulombs are both units used to measure electric charge. Keep reading to learn more about each unit of measure.

What Is an Ampere-Hour?

One ampere-hour is the electric charge equal to the charge conveyed by a current of one ampere for one hour. One ampere-hour is equal to 3,600 coulombs.

The ampere-hour is a non-SI metric unit for electric charge. An ampere-hour is sometimes also referred to as an amp-hour. Ampere-hours are usually abbreviated as Ah, although the formally adopted expression is A·h. The abbreviation A h is also sometimes used. For example, 1 ampere-hour can be written as 1 Ah, 1 A·h, or 1 A h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.^[1]

Learn more about ampere-hours.

What Is a Coulomb?

One coulomb is the electric charge equal to one ampere of current over one second.^[1]

The coulomb can be expressed as Q_C = I_A × t_s

The charge in coulombs is equal to the current in amperes times the time in seconds.

The coulomb is the SI derived unit for electric charge in the metric system. Coulombs can be abbreviated as C; for example, 1 coulomb can be written as 1 C.

Learn more about coulombs.

Ampere-Hour to Coulomb Conversion Table

Table showing various ampere-hour measurements converted to coulombs.
Ampere-hours	Coulombs
0.001 Ah	3.6 C
0.002 Ah	7.2 C
0.003 Ah	10.8 C
0.004 Ah	14.4 C
0.005 Ah	18 C
0.006 Ah	21.6 C
0.007 Ah	25.2 C
0.008 Ah	28.8 C
0.009 Ah	32.4 C
0.01 Ah	36 C
0.02 Ah	72 C
0.03 Ah	108 C
0.04 Ah	144 C
0.05 Ah	180 C
0.06 Ah	216 C
0.07 Ah	252 C
0.08 Ah	288 C
0.09 Ah	324 C
0.1 Ah	360 C
0.2 Ah	720 C
0.3 Ah	1,080 C
0.4 Ah	1,440 C
0.5 Ah	1,800 C
0.6 Ah	2,160 C
0.7 Ah	2,520 C
0.8 Ah	2,880 C
0.9 Ah	3,240 C
1 Ah	3,600 C

Table showing various ampere-hour measurements converted to coulombs.

Ampere-hours

Coulombs

0.001 Ah

3.6 C

0.002 Ah

7.2 C

0.003 Ah

10.8 C

0.004 Ah

14.4 C

0.005 Ah

18 C

0.006 Ah

21.6 C

0.007 Ah

25.2 C

0.008 Ah

28.8 C

0.009 Ah

32.4 C

0.01 Ah

36 C

0.02 Ah

72 C

0.03 Ah

108 C

0.04 Ah

144 C

0.05 Ah

180 C

0.06 Ah

216 C

0.07 Ah

252 C

0.08 Ah

288 C

0.09 Ah

324 C

0.1 Ah

360 C

0.2 Ah

720 C

0.3 Ah

1,080 C

0.4 Ah

1,440 C

0.5 Ah

1,800 C

0.6 Ah

2,160 C

0.7 Ah

2,520 C

0.8 Ah

2,880 C

0.9 Ah

3,240 C

1 Ah

3,600 C

References

Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf