Ampere-hour to Coulomb Converter
Convert ampere-hours to coulombs (Ah to C) instantly with this free online electric-charge converter. Enter any value in the Ampere-hour field and get the equivalent in Coulomb immediately. This converter handles any quantity — from tiny fractions to large numbers — with full precision. No signup, no ads in the widget, and the conversion runs entirely in your browser for instant results.
The conversion factor is exact: 1 Ah = 3600 C. To convert ampere-hours to coulombs, multiply your Ampere-hour value by 3600. For example, 10 Ah = 36000 C. You can also reverse the calculation: 1 C = 0.0002777777778 Ah.
Quick conversion table
| Ampere-hour (Ah) | Coulomb (C) |
|---|---|
| 1 Ah | 3600 C |
| 5 Ah | 18000 C |
| 10 Ah | 36000 C |
| 25 Ah | 90000 C |
| 50 Ah | 180000 C |
| 100 Ah | 360000 C |
Use the swap button to reverse the direction, or choose a different unit from the dropdown menus to convert within the electric-charge category.
Formula
Ampere-hour to Coulomb conversion: 1 Ah = 3600 C coulombs = ampere-hours × 3600 1 C = 0.0002777777778 Ah ampere-hours = coulombs × 0.0002777777778
Example
Example: Convert 10 Ah to C: 10 Ah × 3600 = 36000 C So, 10 Ah is about 36000 C. To convert back, multiply by 0.0002777777778: 36000 C × 0.0002777777778 = 10 Ah.
How to Use
- Enter the value you want to convert in the Ampere-hour field
- The result in Coulomb appears instantly below
- Use the dropdown menus to change units if needed
- Click 'Swap Units' to reverse the conversion direction
- Copy the result or adjust the input for a new conversion
Frequently Asked Questions
How do I convert ampere-hours to coulombs?
Enter the value in Ampere-hour (Ah) in the 'From' field. The equivalent in Coulomb (C) appears instantly in the 'To' field. The converter uses precise conversion factors and updates in real time as you type.
What is the formula to convert Ah to C?
1 Ah = 3600 C, so coulombs = ampere-hours × 3600. To convert back, 1 C = 0.0002777777778 Ah. The full formula and a worked example are shown on this page.
How many coulombs are in one Ampere-hour?
1 Ah = 3600 C.
Is this Ampere-hour to Coulomb converter free?
Yes, completely free with no signup, no limits, and no ads in the converter widget. You can convert as many values as you need. The tool runs entirely in your browser, so your data never leaves your device.
Can I convert coulombs back to ampere-hours?
Yes. Click the 'Swap Units' button to reverse the direction. You can also use the dropdown menus to select any other electric-charge unit for either field.
How accurate is the Ah to C conversion?
The converter uses high-precision conversion factors (up to 8 decimal places). Results are displayed with up to 6 decimal places, with trailing zeros removed for readability. For scientific or engineering work, always verify with official standards.