Milliampere-hours to Coulombs
1 milliampere-hour = 3.6 coulombs · 1 C = 0.27778 mA·h
1 milliampere-hour = 3.6 coulombs
How it’s calculated
C = mA·h × 3.6
- Multiply the value in milliampere-hours by 3.6.
- To go back, divide by 3.6 (or multiply by 0.2777777778).
- 1 mA·h = 3.6 C · 1 C = 0.2777777778 mA·h
Show worked solutionFactor, unit cancellation and rounding, step by step
Find the conversion factor
By definition 1 mA·h = 3.6 C. Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.).
Multiply by the factor written as a fraction
Put mA·h in the denominator so it cancels, leaving C.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 3.6 C
1 mA·h in other units
Batch convert mA·h → C
- 1 mA·h = 3.6 C
- 5 mA·h = 18 C
- 10 mA·h = 36 C
- 25 mA·h = 90 C
Quick examples
- 1 milliampere-hour = 3.6 coulombs
- 5 milliampere-hours = 18 coulombs
- 10 milliampere-hours = 36 coulombs
- 25 milliampere-hours = 90 coulombs
- 100 milliampere-hours = 360 coulombs
About these units
Milliampere-hour (mA·h)
other
Exactly 3.6 C. Phone and small battery capacities.
1 mA·h = 3.6 C
Source: NIST SP 811 / Handbook 44
Coulomb (C)
SI (metric)
SI unit of electric charge: 1 A·s.
Base unit
Source: BIPM SI Brochure (9th ed.)
Milliampere-hours to coulombs conversion table
| Milliampere-hours (mA·h) | Coulombs (C) |
|---|---|
| 100 mA·h | 360 C |
| 500 mA·h | 1,800 C |
| 1,000 mA·h | 3,600 C |
| 1,500 mA·h | 5,400 C |
| 2,000 mA·h | 7,200 C |
| 2,500 mA·h | 9,000 C |
| 3,000 mA·h | 10,800 C |
| 3,500 mA·h | 12,600 C |
| 4,000 mA·h | 14,400 C |
| 4,500 mA·h | 16,200 C |
| 5,000 mA·h | 18,000 C |
| 10,000 mA·h | 36,000 C |
| 20,000 mA·h | 72,000 C |
Related conversions
Frequently asked questions
How do I convert milliampere-hours to coulombs?
Use C = mA·h × 3.6. Multiply the value in milliampere-hours by 3.6.
How many coulombs are in 1 milliampere-hour?
1 milliampere-hour (mA·h) equals 3.6 coulombs (C).
How many milliampere-hours are in 1 coulomb?
1 coulomb (C) equals 0.27778 milliampere-hours (mA·h); more precisely 0.2777777778.
What is 100 mA·h in C?
100 milliampere-hours = 360 coulombs.
What is a milliampere-hour?
Exactly 3.6 C. Phone and small battery capacities.
What is a coulomb?
SI unit of electric charge: 1 A·s.
Formula: C = mA·h × 3.6. Factors last reviewed 2026-10-27.