Charge Converter
Ampere-hour (Ah)
Definition: An ampere-hour is a unit of electric charge, representing the charge transferred by a steady current of one ampere flowing for one hour.
History/origin: As battery technology evolved for industrial use, engineers needed a unit that combined current and time to describe how long a power source would last.
Current use: Ah is the standard rating for deep-cycle batteries, lead-acid car batteries, and large-scale energy storage systems.
Coulomb (C)
Definition: The coulomb (symbol: C) is the SI unit of electric charge. It is the charge transported by a constant current of one ampere in one second.
History/origin: Named after the French physicist Charles-Augustin de Coulomb, who developed Coulomb's law to describe the force between electrical charges in the 18th century.
Current use: The coulomb is the fundamental unit used in physics and electrical engineering to calculate electrical force and capacitance.
Ampere-hour (Ah) to Coulomb (C) Conversion Table
| Ampere-hour (Ah) [ah] | Coulomb (C) [c] |
|---|---|
| 0.01 ah | 36 c |
| 0.1 ah | 360 c |
| 1 ah | 3600 c |
| 2 ah | 7200 c |
| 3 ah | 10800 c |
| 5 ah | 18000 c |
| 10 ah | 36000 c |
| 20 ah | 72000 c |
| 50 ah | 180000 c |
| 100 ah | 360000 c |
| 1000 ah | 3600000 c |
How to Convert Ampere-hour (Ah) to Coulomb (C)
1 ah = 3600 c
1 c = 0.00027778 ah
Example: convert 15 ah to c:
15 ah = 15 × 3600 c = 54000 c
Did You Know?
- The Ampere-hour (Ah) is often used to measure the total energy capacity of larger batteries, like those in cars or solar power systems. 1 Ah equals exactly 3,600 Coulombs.
- Did you know? One Coulomb (C) is equivalent to the charge of approximately 6.242 quintillion (6.242 x 10¹⁸) electrons! It is named after Charles-Augustin de Coulomb.