ConvertNavi

Hectopascal to Standard atmosphere (hPa → atm)

Convert hectopascal to standard atmosphere instantly. The conversion factor below is exact by international definition.

Realtime·pressure·SI
Exact
hPa
× 0.001
atm
0.00098692
Precision [auto]
6

📐hPa to atm formulaExact

atm = hPa × 0.000986923267
Inverse: hPa = atm × 1013.25

Worked example: 1 hPa = 0.000986923267 atm

ℹ️About these units

Hectopascal (hPa)
Weather forecasts (atmospheric pressure).
Standard atmosphere (atm)
Source: 1 atm = 101 325 Pa exact (BIPM).

📊Reference table: hPa → atm

Hectopascal (hPa)Standard atmosphere (atm)
10.00098692
20.001974
50.004935
100.009869
150.014804
200.019738
250.024673
500.049346
1000.098692
2500.246731
5000.493462
7500.740192
1,0000.986923

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: atm → hPahPa → PahPa → kPahPa → MPahPa → barhPa → mbarhPa → psihPa → ksihPa → Torr

🔌API & widget

GET https://convertnavi.com/api/v1/convert?value=10&from=hectopascal&to=atmosphere
Embed this converter
<div data-convertnavi="hectopascal->atmosphere"></div>
<script async src="https://convertnavi.com/embed.js"></script>