Hectopascal → Atmosphere (hPa → atm)

hPa to atm direct conversion page with calculator, reverse conversion and comparison table.

1 hPa = 0.00098692326671601 atm
1 Hectopascal (hPa) = 0.00098692326671601 Atmosphere (atm).


swap converter

If you want to reverse convert, use Atmosphere → Hectopascal. 1 atm = 1013.25 hPa. You can also explore the full Pressure converter page for more cross conversions.

Conversion formula

Hectopascal to Atmosphere formula: value in atm = value in hPa × 0.00098692326671601.

Atmosphere to Hectopascal formula: value in hPa = value in atm × 1013.25.

How to convert Hectopascal to Atmosphere

To convert Hectopascal to Atmosphere, multiply the value in hPa by 0.00098692326671601. This gives the result in atm.

For example, 1 hPa = 0.00098692326671601 atm and 10 hPa = 0.0098692326671601 atm.

What is Hectopascal?

Hectopascal (hPa): Weather reports use this scale for atmospheric pressure, often around a thousand hectopascals near sea level. 1 hPa = 100 Pa.

What is Atmosphere?

Atmosphere (atm): A reference pressure for comparing gas conditions, rather than a reading of today’s weather. 1 atm = 101 325 Pa.

FAQ

How many atmosphere are in 1 hectopascal?

There are 0.00098692326671601 atm in 1 hPa.

Why can conversion results differ slightly?

Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.

How do I convert hectopascal to atmosphere?

Multiply the value in hPa by 0.00098692326671601 to get the value in atm.

Hectopascal → other Pressure units

Hectopascal → Atmosphere Table

The table below shows common values from Hectopascal to Atmosphere and the reverse direction for quick reference.

hPaatmRounded
1 hPa0.00098692326671601 atm0.0010
2 hPa0.001973846533432 atm0.0020
3 hPa0.002960769800148 atm0.0030
4 hPa0.0039476930668641 atm0.0039
5 hPa0.0049346163335801 atm0.0049
10 hPa0.0098692326671601 atm0.0099
12 hPa0.011843079200592 atm0.0118
15 hPa0.01480384900074 atm0.0148
20 hPa0.01973846533432 atm0.0197
25 hPa0.0246730816679 atm0.0247
30 hPa0.02960769800148 atm0.0296
40 hPa0.039476930668641 atm0.0395
50 hPa0.049346163335801 atm0.0493
75 hPa0.074019245003701 atm0.0740
100 hPa0.098692326671601 atm0.0987
200 hPa0.1973846533432 atm0.1974
250 hPa0.246730816679 atm0.2467
500 hPa0.49346163335801 atm0.4935
750 hPa0.74019245003701 atm0.7402
1000 hPa0.98692326671601 atm0.9869
2500 hPa2.46730816679 atm2.4673
5000 hPa4.9346163335801 atm4.9346
10000 hPa9.8692326671601 atm9.8692

Atmosphere → Hectopascal Table

atmhPaRounded
1 atm1013.25 hPa1013.2500
2 atm2026.5 hPa2026.5000
3 atm3039.75 hPa3039.7500
4 atm4053 hPa4053.0000
5 atm5066.25 hPa5066.2500
10 atm10132.5 hPa10132.5000
12 atm12159 hPa12159.0000
15 atm15198.75 hPa15198.7500
20 atm20265 hPa20265.0000
25 atm25331.25 hPa25331.2500
30 atm30397.5 hPa30397.5000
40 atm40530 hPa40530.0000
50 atm50662.5 hPa50662.5000
75 atm75993.75 hPa75993.7500
100 atm101325 hPa101325.0000
200 atm202650 hPa202650.0000
250 atm253312.5 hPa253312.5000
500 atm506625 hPa506625.0000
750 atm759937.5 hPa759937.5000
1000 atm1013250 hPa1013250.0000
2500 atm2533125 hPa2533125.0000
5000 atm5066250 hPa5066250.0000
10000 atm10132500 hPa10132500.0000

Atmosphere → Hectopascal

The reverse value is 1 atm = 1013.25 hPa.