hPa to mbar Converter

How to convert hectopascals to millibars

Formulambar = hPa × 1

Multiply the value in hectopascals by 1. To go the other way, multiply by 1 (or divide by 1).

The two units are the same size.

Worked examples

1 hectopascal1 hPa × 1 = 1 mbar
5 hectopascals5 hPa × 1 = 5 mbar
10 hectopascals10 hPa × 1 = 10 mbar
20 hectopascals20 hPa × 1 = 20 mbar
100 hectopascals100 hPa × 1 = 100 mbar

Hectopascals to millibars conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Hectopascals to millibars: 0.1–10 hPa
Hectopascals (hPa)	Millibars (mbar)
0.1 hPa	0.1 mbar
0.25 hPa	0.25 mbar
0.5 hPa	0.5 mbar
1 hPa	1 mbar
2 hPa	2 mbar
3 hPa	3 mbar
4 hPa	4 mbar
5 hPa	5 mbar
6 hPa	6 mbar
7 hPa	7 mbar
8 hPa	8 mbar
9 hPa	9 mbar
10 hPa	10 mbar

Hectopascals to millibars: 12–1,000 hPa
Hectopascals (hPa)	Millibars (mbar)
12 hPa	12 mbar
15 hPa	15 mbar
20 hPa	20 mbar
25 hPa	25 mbar
30 hPa	30 mbar
40 hPa	40 mbar
50 hPa	50 mbar
75 hPa	75 mbar
100 hPa	100 mbar
250 hPa	250 mbar
500 hPa	500 mbar
1,000 hPa	1,000 mbar

About the units

Hectopascal (hPa)

One hundred pascals, numerically equal to a millibar. Weather maps show sea-level pressure in hPa (around 1013). One hectopascal equals 100 pascals (Pa).

Millibar (mbar)

The millibar (mbar) is a unit of pressure in the metric system. One millibar equals 100 pascals (Pa).

Frequently asked questions

How many millibars are in one hectopascal?

There is 1 millibar in one hectopascal, and this value is exact by definition.

How do I convert hectopascals to millibars?

Multiply the number of hectopascals by 1. For example, 10 hPa × 1 = 10 mbar.

How many hectopascals are in one millibar?

One millibar equals 1 hectopascal. That is the reverse factor, 1 ÷ 1.

What is 10 hectopascals in millibars?

10 hPa = 10 mbar.

Is this hPa to mbar converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.