Electric charge units
Each unit in C
| Unit | Symbol | In C | |
|---|---|---|---|
| coulomb | C | 1 | exact |
| millicoulomb | mC | 0.001 | exact |
| microcoulomb | µC | 1 × 10−6 | exact |
| nanocoulomb | nC | 1 × 10−9 | exact |
| elementary charge | e | 1.602 176 634 × 10−19 | exact |
| ampere hour | A·h | 3600 | exact |
| milliampere hour | mA·h | 3.6 | exact |
| statcoulomb (esu) | statC | 3.335 640 951 98 × 10−10 | exact |
Conversion matrix
1 unit of the row equals the cell value in the column unit.
| 1 … | C | mC | µC | nC | e | A·h | mA·h | statC |
|---|---|---|---|---|---|---|---|---|
| C | 1 | 1000 | 1 000 000 | 1 000 000 000 | 6.241 509 074 × 1018 | 2.777 777 778 × 10−4 | 0.277 777 7778 | 2 997 924 580 |
| mC | 0.001 | 1 | 1000 | 1 000 000 | 6.241 509 074 × 1015 | 2.777 777 778 × 10−7 | 2.777 777 778 × 10−4 | 2 997 924.58 |
| µC | 1 × 10−6 | 0.001 | 1 | 1000 | 6.241 509 074 × 1012 | 2.777 777 778 × 10−10 | 2.777 777 778 × 10−7 | 2997.924 58 |
| nC | 1 × 10−9 | 1 × 10−6 | 0.001 | 1 | 6 241 509 074 | 2.777 777 778 × 10−13 | 2.777 777 778 × 10−10 | 2.997 924 58 |
| e | 1.602 176 634 × 10−19 | 1.602 176 634 × 10−16 | 1.602 176 634 × 10−13 | 1.602 176 634 × 10−10 | 1 | 4.450 490 65 × 10−23 | 4.450 490 65 × 10−20 | 4.803 204 713 × 10−10 |
| A·h | 3600 | 3 600 000 | 3 600 000 000 | 3.6 × 1012 | 2.246 943 267 × 1022 | 1 | 1000 | 1.079 252 849 × 1013 |
| mA·h | 3.6 | 3600 | 3 600 000 | 3 600 000 000 | 2.246 943 267 × 1019 | 0.001 | 1 | 1.079 252 849 × 1010 |
| statC | 3.335 640 952 × 10−10 | 3.335 640 952 × 10−7 | 3.335 640 952 × 10−4 | 0.333 564 0952 | 2 081 943 327 | 9.265 669 311 × 10−14 | 9.265 669 311 × 10−11 | 1 |
Sources: SI Brochure (9th edition, 2019); NIST Special Publication 811 (2008), Appendix B; CODATA 2022 for the bohr, dalton, hartree and rydberg. Factors marked exact follow from the definitions of the units.