Convert Attocoulombs to Ampere-hours
Convert Attocoulombs (aC) to Ampere-hours (Ah) instantly and accurately.
Conversion Formula
Ah = aC × 2.777777778e-22
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.
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.
Quick Reference Table
| Attocoulombs (aC) | Ampere-hours (Ah) |
|---|---|
| 1 aC | 2.778 × 10-22 Ah |
| 2 aC | 5.556 × 10-22 Ah |
| 5 aC | 1.389 × 10-21 Ah |
| 10 aC | 2.778 × 10-21 Ah |
| 25 aC | 6.944 × 10-21 Ah |
| 50 aC | 1.389 × 10-20 Ah |
| 100 aC | 2.778 × 10-20 Ah |