Convert Watt-Hours (Wh) to Amp-hours (Ah)
Convert Watt-Hours to Amp-hours instantly. 1 Wh = 0.27027 Ah, so multiply your Wh value to get the equivalent in Ah.
Formula
1 Wh = 0.27027 Ah
To convert Wh to Ah, divide the value by 3.7.
Conversion Table
| Watt-Hours (Wh) | Amp-hours (Ah) |
|---|---|
| 1 Wh | 0.2703 Ah |
| 2 Wh | 0.5405 Ah |
| 5 Wh | 1.3514 Ah |
| 10 Wh | 2.7027 Ah |
| 15 Wh | 4.0541 Ah |
| 20 Wh | 5.4054 Ah |
| 27 Wh | 7.2973 Ah |
| 37 Wh | 10 Ah |
| 50 Wh | 13.5135 Ah |
| 74 Wh | 20 Ah |
| 100 Wh | 27.027 Ah |
| 150 Wh | 40.5405 Ah |
| 160 Wh | 43.2432 Ah |
| 200 Wh | 54.0541 Ah |
| 250 Wh | 67.5676 Ah |
| 300 Wh | 81.0811 Ah |
| 500 Wh | 135.1351 Ah |
| 1000 Wh | 270.2703 Ah |
| 2000 Wh | 540.5405 Ah |
| 5000 Wh | 1351.3514 Ah |
Common Wh to Ah Examples
- 10 Wh = 2.7027 Ah
- 27 Wh = 7.2973 Ah
- 37 Wh = 10 Ah
- 50 Wh = 13.5135 Ah
- 100 Wh = 27.027 Ah
- 160 Wh = 43.2432 Ah
- 200 Wh = 54.0541 Ah
- 500 Wh = 135.1351 Ah
Frequently Asked Questions
How much is 1 Wh in Ah?
1 Wh equals 0.27027 Ah. This ratio applies to every conversion between the two units.
What is the formula to convert Wh to Ah?
The formula is 1 Wh = 0.27027 Ah. To convert any value, divide the value by 3.7.
How do I convert Wh to Ah by hand?
Take the value in Wh and divide the value by 3.7. The result is the same value expressed in Ah.
Is the conversion from Wh to Ah exact?
The ratio 0.27027 is defined to high precision and is exact for most practical purposes. Rounding only matters when many decimal places are needed.
How many decimal places should I keep when converting Wh to Ah?
For everyday use, 2 to 4 decimal places are enough. Scientific or engineering work may require 6 or more.
Can I convert Ah back to Wh?
Yes. Simply invert the ratio: divide the Ah value by 0.27027 to get the equivalent in Wh.