Milliampere-hours to Ampere-hours
1 milliampere-hour = 0.001 ampere-hours · 1 A·h = 1,000 mA·h
1 milliampere-hour = 0.001 ampere-hours
How it’s calculated
A·h = mA·h × 0.001
- Multiply the value in milliampere-hours by 0.001.
- To go back, divide by 0.001 (or multiply by 1000).
- 1 mA·h = 0.001 A·h · 1 A·h = 1,000 mA·h
Show worked solutionFactor, unit cancellation and rounding, step by step
Find the conversion factor
By definition 1 mA·h = 3.6 C and 1 A·h = 3600 C, so 1 A·h = 1000 mA·h. Source: NIST SP 811 / Handbook 44.
Multiply by the factor written as a fraction
Put mA·h in the denominator so it cancels, leaving A·h.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 0.001 A·h
1 mA·h in other units
Batch convert mA·h → A·h
- 1 mA·h = 0.001 A·h
- 5 mA·h = 0.005 A·h
- 10 mA·h = 0.01 A·h
- 25 mA·h = 0.025 A·h
Quick examples
- 1 milliampere-hour = 0.001 ampere-hours
- 5 milliampere-hours = 0.005 ampere-hours
- 10 milliampere-hours = 0.01 ampere-hours
- 25 milliampere-hours = 0.025 ampere-hours
- 100 milliampere-hours = 0.1 ampere-hours
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
Ampere-hour (A·h)
other
Exactly 3 600 C. Battery capacity unit.
1 A·h = 3600 C
Source: NIST SP 811 / Handbook 44
Milliampere-hours to ampere-hours conversion table
| Milliampere-hours (mA·h) | Ampere-hours (A·h) |
|---|---|
| 100 mA·h | 0.1 A·h |
| 500 mA·h | 0.5 A·h |
| 1,000 mA·h | 1 A·h |
| 1,500 mA·h | 1.5 A·h |
| 2,000 mA·h | 2 A·h |
| 2,500 mA·h | 2.5 A·h |
| 3,000 mA·h | 3 A·h |
| 3,500 mA·h | 3.5 A·h |
| 4,000 mA·h | 4 A·h |
| 4,500 mA·h | 4.5 A·h |
| 5,000 mA·h | 5 A·h |
| 10,000 mA·h | 10 A·h |
| 20,000 mA·h | 20 A·h |
Related conversions
Frequently asked questions
How do I convert milliampere-hours to ampere-hours?
Use A·h = mA·h × 0.001. Multiply the value in milliampere-hours by 0.001.
How many ampere-hours are in 1 milliampere-hour?
1 milliampere-hour (mA·h) equals 0.001 ampere-hours (A·h).
How many milliampere-hours are in 1 ampere-hour?
1 ampere-hour (A·h) equals 1,000 milliampere-hours (mA·h).
What is 100 mA·h in A·h?
100 milliampere-hours = 0.1 ampere-hours.
What is a milliampere-hour?
Exactly 3.6 C. Phone and small battery capacities.
What is a ampere-hour?
Exactly 3 600 C. Battery capacity unit.
Formula: A·h = mA·h × 0.001. Factors last reviewed 2026-10-27.