Convert Ampere-hours to Attocoulombs
Convert Ampere-hours (Ah) to Attocoulombs (aC) instantly and accurately.
Conversion Formula
aC = Ah × 3.600000000e+21
About Ampere-hours
The ampere-hour (Ah) equals exactly 3 600 C and is the universal capacity unit for rechargeable batteries. Lead-acid car batteries are rated 40-100 Ah; EV traction packs use 50-300 Ah cells; industrial forklift batteries exceed 1 000 Ah. Multiplying Ah by nominal voltage gives watt-hours of stored energy. 1 Ah = 3 600 C = 1 000 mAh.
About Attocoulombs
The attocoulomb (aC) equals 10⁻¹⁸ C, sitting between the elementary charge and the femtocoulomb. It arises in ultra-sensitive charge measurements: single-electron transistors, quantum capacitance probing of graphene and 2D materials, and scanning tunnelling microscopy where tip-sample charge exchange is tracked at this scale. 1 aC = 10⁻³ fC ≈ 6.24 e.
Quick Reference Table
| Ampere-hours (Ah) | Attocoulombs (aC) |
|---|---|
| 1 Ah | 3.6 × 1021 aC |
| 2 Ah | 7.2 × 1021 aC |
| 5 Ah | 1.8 × 1022 aC |
| 10 Ah | 3.6 × 1022 aC |
| 25 Ah | 9 × 1022 aC |
| 50 Ah | 1.8 × 1023 aC |
| 100 Ah | 3.6 × 1023 aC |