Hectopascal to Standard Atmosphere Converter

Convert Hectopascal to Standard Atmosphere instantly — live results with exact conversion factors.

From

0.000986923267 atm

1 hectopascal = 0.0009869232667 standard atmospheres. To convert hPa to atm, multiply by 0.0009869232667.

Quick Reference Table

Hectopascal (hPa)	Standard Atmosphere (atm)
1	0.000986923267
2	0.00197384653
5	0.00493461633
10	0.00986923267
20	0.019738465
50	0.049346163
100	0.098692327
250	0.24673082
500	0.49346163
1000	0.98692327

Formula

Convert Hectopascal (hPa) to Standard Atmosphere (atm) using the relationship:

atm = hPa × 0.0009869232667

How to Convert

Take the value in hectopascals (hPa).
Multiply it by 0.0009869232667 (the conversion factor from hPa to atm).
The result is the equivalent value in standard atmospheres (atm).
Example: 1 hPa = 0.000986923267 atm.

Reverse Conversion

Need it the other direction? Standard Atmosphere to Hectopascal conversion.

All Pressure / Stress Conversions

See the full list of Pressure / Stress conversions.

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FAQ

▸ How many standard atmospheres are in 1 hectopascal?

1 Hectopascal equals 0.000986923267 standard atmospheres. Multiply by 0.0009869232667 to convert hPa to atm.

▸ What is the formula to convert hectopascal to standard atmosphere?

Multiply the value in hectopascals by 0.0009869232667 to get standard atmospheres. Formula: atm = hPa × 0.0009869232667.

▸ How do I convert hectopascals to standard atmospheres easily?

Enter your value in the converter at the top of this page — the standard atmospheres result updates live as you type. You can also multiply by 0.0009869232667 directly.

Answer