Convert Coulombs to Kilocoulombs
Convert Coulombs (C) to Kilocoulombs (kC) instantly and accurately.
Conversion Formula
kC = C × 0.001
About Coulombs
The coulomb (C) is the SI derived unit of electric charge, equal to the charge transported by a current of 1 A in 1 s. In the 2019 SI revision it is fixed exactly via the elementary charge: 1 C = 1 / (1.602 176 634 × 10⁻¹⁹) e ≈ 6.241 × 10¹⁸ e. Practical benchmarks: a 1 Ah battery stores 3 600 C; a lightning bolt transfers 1-20 C.
About Kilocoulombs
The kilocoulomb (kC) equals 10³ C ≈ 0.278 Ah, used in industrial electrochemistry, large capacitor bank energy calculations, and fault current analysis. Electroplating a 100 cm² nickel layer 25 µm thick requires roughly 2-4 kC; power-factor-correction capacitor banks in substations may store several kilocoulombs. 1 kC = 10⁻³ MC = 10³ C.
Quick Reference Table
| Coulombs (C) | Kilocoulombs (kC) |
|---|---|
| 1 C | 0.001 kC |
| 2 C | 0.002 kC |
| 5 C | 0.005 kC |
| 10 C | 0.01 kC |
| 25 C | 0.025 kC |
| 50 C | 0.05 kC |
| 100 C | 0.1 kC |