atm to hPa converter
1 standard atmosphere equals 1,013.25 hectopascals. Conversions use hPa = atm × 1013.3
atm → 1,013.25 hPa
hPa = atm × 1013.3
Converter
Worked examples
- 1 atm = 1,013.25 hPa
- 2 atm = 2,026.5 hPa
- 5 atm = 5,066.25 hPa
- 10 atm = 10,132.5 hPa
- 100 atm = 101,325 hPa
standard atmospheres to hectopascals conversion table
| atm | hPa | Arithmetic |
|---|---|---|
| 1 atm | 1,013.25 hPa | × 1013.3 |
| 2 atm | 2,026.5 hPa | × 1013.3 |
| 3 atm | 3,039.75 hPa | × 1013.3 |
| 4 atm | 4,053 hPa | × 1013.3 |
| 5 atm | 5,066.25 hPa | × 1013.3 |
| 6 atm | 6,079.5 hPa | × 1013.3 |
| 8 atm | 8,106 hPa | × 1013.3 |
| 10 atm | 10,132.5 hPa | × 1013.3 |
| 12 atm | 12,159 hPa | × 1013.3 |
| 15 atm | 15,198.75 hPa | × 1013.3 |
| 20 atm | 20,265 hPa | × 1013.3 |
| 25 atm | 25,331.25 hPa | × 1013.3 |
| 30 atm | 30,397.5 hPa | × 1013.3 |
| 40 atm | 40,530 hPa | × 1013.3 |
| 50 atm | 50,662.5 hPa | × 1013.3 |
| 60 atm | 60,795 hPa | × 1013.3 |
| 70 atm | 70,927.5 hPa | × 1013.3 |
| 80 atm | 81,060 hPa | × 1013.3 |
| 90 atm | 91,192.5 hPa | × 1013.3 |
| 100 atm | 101,325 hPa | × 1013.3 |
How to convert atm to hPa
- Take your value in standard atmospheres.
- Multiply by 1013.3
- That is your answer in hectopascals — no rounding needed until you choose a display precision.
Related conversions
hPa to atmkPa to hPabar to hPapsi to hPaatm to kPaatm to baratm to psiatm to mmHgatm to inHgall pressure units
Questions
How many hectopascals in 1 standard atmosphere?
Exactly 1,013.25 hPa. The factor follows from the definitions of both units, not from a measurement, so it is exact.
How do I convert atm to hPa?
Multiply the standard atmospheres figure by 1013.3 — or use the converter above, which updates as you type.
Is atm to hPa the same as hPa to atm?
No — they are inverses. One atm is 1,013.25 hPa, while one hPa is 0.0009869233 atm.
What is 1 atm in hPa?
1 atm = 1,013.25 hPa (see the value page for the full arithmetic).