Charge / mA·h → C
Convert Milliampere-hours to Coulombs
Convert electric charge in coulombs and ampere-hours. Convert Milliampere-hours (mA·h) to Coulombs (C). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Coulombs to Milliampere-hours →
How to convert milliampere-hours to coulombs
Charge is current integrated over time. An ampere-hour is exactly 3600 coulombs. Battery energy additionally depends on voltage and cannot be found from charge alone.
Use x for the value in mA·h, b for the intermediate value in C, and y for the result in C.
C = mA·h × 3.6
Worked examples
10 mA·h ≈ 36 C
Step 1: (10 × 3.6) ≈ 36 C.
Step 2: 36 ÷ 1 ≈ 36 C.20 mA·h ≈ 72 C
Step 1: (20 × 3.6) ≈ 72 C.
Step 2: 72 ÷ 1 ≈ 72 C.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Milliampere-hours
Milliampere-hours (mA·h) measures charge under the conventions above. The base value in C is (x × 3.6), where x is the numerical value in mA·h. Factors shown here are rounded for display; calculations use the stored factor.
About Coulombs
Coulombs (C) measures charge under the conventions above. The base value in C is (x × 1), where x is the numerical value in C. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Milliampere-hours to coulombs reference table
| Milliampere-hours (mA·h) | Coulombs (C) |
|---|---|
| 1 | 3.6 |
| 5 | 18 |
| 10 | 36 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 1000 | 3600 |
Browse every charge conversion →