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Hectopascals to Millibars Converter

1 hPa = 1 mbar (hectopascal → millibar)

1 hPa = 1 mbar

1 hectopascal equals 1 millibar. To convert hectopascals to millibars, multiply the hectopascal value by 1. For quick reference: 1 hPa = 1 mbar, 5 hPa = 5 mbar, 10 hPa = 10 mbar, 100 hPa = 100 mbar.

1
FormulaMillibars = Hectopascals × 1
Quick

How to convert hectopascals to millibars

  1. Take your value

    Start with your value in hectopascals.

  2. Multiply by 1

    Multiply the hectopascal value by 1. This is the exact conversion factor from hectopascals to millibars.

  3. Read the result

    The product is your value in millibars. For example, 5 hPa × 1 = 5 mbar.

Conversion formula

The exact factor from hectopascals to millibars is 1.

Millibars = Hectopascals × 1

Hectopascals to Millibars 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 millibars
Hectopascals (hPa)Millibars (mbar)
0.001 hPa0.001 mbar
0.01 hPa0.01 mbar
0.1 hPa0.1 mbar
0.5 hPa0.5 mbar
1 hPa1 mbar
1.5 hPa1.5 mbar
2 hPa2 mbar
2.5 hPa2.5 mbar
3 hPa3 mbar
4 hPa4 mbar
5 hPa5 mbar
6 hPa6 mbar
7 hPa7 mbar
8 hPa8 mbar
9 hPa9 mbar
10 hPa10 mbar
14 hPa14 mbar
15 hPa15 mbar
20 hPa20 mbar
25 hPa25 mbar
30 hPa30 mbar
32 hPa32 mbar
35 hPa35 mbar
40 hPa40 mbar
50 hPa50 mbar
60 hPa60 mbar
75 hPa75 mbar
80 hPa80 mbar
100 hPa100 mbar
101.325 hPa101.33 mbar
150 hPa150 mbar
200 hPa200 mbar
250 hPa250 mbar
300 hPa300 mbar
400 hPa400 mbar
500 hPa500 mbar
760 hPa760 mbar
1000 hPa1000 mbar
1013.25 hPa1013.3 mbar
2000 hPa2000 mbar
5000 hPa5000 mbar
10000 hPa10000 mbar
14.7 hPa14.7 mbar
50000 hPa50000 mbar
100000 hPa100000 mbar
101325 hPa101325 mbar
200000 hPa200000 mbar
500000 hPa500000 mbar
1000000 hPa1000000 mbar
10000000 hPa10000000 mbar

Real-world reference

Standard atmospheric pressure is 1,013.25 hPa. A deep low-pressure system might read below 970 hPa. In millibars, that gives you: 1 hPa = 1 mbar, 10 hPa = 10 mbar, 100 hPa = 100 mbar.

Frequently asked questions

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

About the hectopascal and the millibar

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 millibar

The millibar (mbar) equals exactly 100 Pa — identical to the hectopascal (hPa) used in modern meteorology. Weather maps almost universally use mbar/hPa for sea-level pressure isobars.

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Sources