How to convert
atm = hPa × 0.0009869233
Reverse: hPa = atm × 1,013.25
atm = hPa × 0.0009869233
Reverse: hPa = atm × 1,013.25
Converting hPa to atm
hPa and atm are units of pressure. One hPa equals 0.0009869233 atm. Just type a value in the box above to convert instantly — useful for recipes, drawings, product specs and travel between metric and imperial units.
hPa to atm conversion chart
| hPa | atm |
|---|---|
| 1 hPa | 0.0009869233 atm |
| 2 hPa | 0.0019738465 atm |
| 3 hPa | 0.0029607698 atm |
| 5 hPa | 0.0049346163 atm |
| 10 hPa | 0.0098692327 atm |
| 20 hPa | 0.0197384653 atm |
| 50 hPa | 0.0493461633 atm |
| 100 hPa | 0.0986923267 atm |
Frequently asked questions
- How many atm are in one hPa?
- 1 hPa = 0.0009869233 atm.
- How do I convert atm back to hPa?
- Multiply the atm value by 1,013.25 to get hPa.
- Is my input sent to a server?
- No. Everything is calculated locally in your browser and nothing is uploaded or stored.