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Hectopascals to Inches of mercury Converter

1 hPa = 0.02953 inHg (hectopascal → inch of mercury)

1 hPa = 0.02953 inHg

1 hectopascal equals 0.02953 inches of mercury. To convert hectopascals to inches of mercury, multiply the hectopascal value by 0.02953. For quick reference: 1 hPa = 0.02953 inHg, 5 hPa = 0.14765 inHg, 10 hPa = 0.2953 inHg, 100 hPa = 2.953 inHg.

How to convert hectopascals to inches of mercury

  1. Take your value

    Start with your value in hectopascals.

  2. Multiply by 0.02953

    Multiply the hectopascal value by 0.02953. This is the exact conversion factor from hectopascals to inches of mercury.

  3. Read the result

    The product is your value in inches of mercury. For example, 5 hPa × 0.02953 = 0.14765 inHg.

Conversion formula

The exact factor from hectopascals to inches of mercury is 0.02953.

Inches of mercury = Hectopascals × 0.02953

Hectopascals to Inches of mercury conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from hectopascals to inches of mercury
Hectopascals (hPa)Inches of mercury (inHg)
0.001 hPa2.9530 × 10^−5 inHg
0.01 hPa0.0002953 inHg
0.1 hPa0.002953 inHg
0.5 hPa0.014765 inHg
1 hPa0.02953 inHg
1.5 hPa0.044295 inHg
2 hPa0.05906 inHg
2.5 hPa0.073825 inHg
3 hPa0.08859 inHg
4 hPa0.11812 inHg
5 hPa0.14765 inHg
6 hPa0.17718 inHg
7 hPa0.20671 inHg
8 hPa0.23624 inHg
9 hPa0.26577 inHg
10 hPa0.2953 inHg
14 hPa0.41342 inHg
15 hPa0.44295 inHg
20 hPa0.5906 inHg
25 hPa0.73825 inHg
30 hPa0.8859 inHg
32 hPa0.94496 inHg
35 hPa1.0335 inHg
40 hPa1.1812 inHg
50 hPa1.4765 inHg
60 hPa1.7718 inHg
75 hPa2.2147 inHg
80 hPa2.3624 inHg
100 hPa2.953 inHg
101.325 hPa2.9921 inHg
150 hPa4.4295 inHg
200 hPa5.906 inHg
250 hPa7.3825 inHg
300 hPa8.859 inHg
400 hPa11.812 inHg
500 hPa14.765 inHg
760 hPa22.443 inHg
1000 hPa29.53 inHg
1013.25 hPa29.921 inHg
2000 hPa59.06 inHg
5000 hPa147.65 inHg
10000 hPa295.3 inHg
14.7 hPa0.43409 inHg
50000 hPa1476.5 inHg
100000 hPa2953 inHg
101325 hPa2992.1 inHg
200000 hPa5906 inHg
500000 hPa14765 inHg
1000000 hPa29530 inHg
10000000 hPa295300 inHg

Real-world reference

Standard atmospheric pressure is 1,013.25 hPa. A deep low-pressure system might read below 970 hPa. In inches of mercury, that gives you: 1 hPa = 0.02953 inHg, 10 hPa = 0.2953 inHg, 100 hPa = 2.953 inHg.

Frequently asked questions

How many inches of mercury are in 1 hectopascal?
1 hectopascal equals 0.02953 inches of mercury.
How do I convert hectopascals to inches of mercury?
Multiply the hectopascal value by 0.02953. So x hPa × 0.02953 = the equivalent in inHg.
What is 5 hectopascals in inches of mercury?
5 hectopascals equals 0.14765 inches of mercury.
What is 10 hectopascals in inches of mercury?
10 hectopascals equals 0.2953 inches of mercury.
What is 100 hectopascals in inches of mercury?
100 hectopascals equals 2.953 inches of mercury.
How do I convert back from inches of mercury to hectopascals?
Multiply the inch of mercury value by 33.8639. For example, 1 inHg = 33.8639 hPa.
Is the hectopascal bigger than the inch of mercury?
No. 1 hectopascal is smaller than 1 inch of mercury. It takes 33.8639 hectopascals to equal 1 inch of mercury.
Are these conversion factors exact?
The factor is derived directly from the SI definitions of hectopascal and inch of mercury; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

About the hectopascal and the inch of mercury

The hectopascal

The hectopascal (hPa) equals exactly 100 Pa — numerically identical to the millibar. It is the unit modern meteorological services use on official weather charts and forecasts, having formally replaced the millibar in most national weather services since the 1980s.

The inch of mercury

The inch of mercury (inHg) equals 3,386.389 Pa under the NIST SP 811 conventional definition. It is the standard unit for barometric pressure on US weather reports and for altimeter settings in US aviation.

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