bar to hPa Converter

How to convert bars to hectopascals

FormulahPa = bar × 1,000

Multiply the value in bars by 1,000. To go the other way, multiply by 0.001 (or divide by 1,000).

A bar is larger than a hectopascal: one bar contains 1,000 hectopascals.

Worked examples

1 bar1 bar × 1,000 = 1,000 hPa
5 bars5 bar × 1,000 = 5,000 hPa
10 bars10 bar × 1,000 = 10,000 hPa
20 bars20 bar × 1,000 = 20,000 hPa
100 bars100 bar × 1,000 = 100,000 hPa

Bars to hectopascals conversion table

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

Bars to hectopascals: 0.1–10 bar
Bars (bar)	Hectopascals (hPa)
0.1 bar	100 hPa
0.25 bar	250 hPa
0.5 bar	500 hPa
1 bar	1,000 hPa
2 bar	2,000 hPa
3 bar	3,000 hPa
4 bar	4,000 hPa
5 bar	5,000 hPa
6 bar	6,000 hPa
7 bar	7,000 hPa
8 bar	8,000 hPa
9 bar	9,000 hPa
10 bar	10,000 hPa

Bars to hectopascals: 12–1,000 bar
Bars (bar)	Hectopascals (hPa)
12 bar	12,000 hPa
15 bar	15,000 hPa
20 bar	20,000 hPa
25 bar	25,000 hPa
30 bar	30,000 hPa
40 bar	40,000 hPa
50 bar	50,000 hPa
75 bar	75,000 hPa
100 bar	100,000 hPa
250 bar	250,000 hPa
500 bar	500,000 hPa
1,000 bar	1,000,000 hPa

About the units

Bar (bar)

Exactly 100,000 Pa, very close to one atmosphere. Common for tyres, scuba tanks and espresso machines (9 bar).

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).

Frequently asked questions

How many hectopascals are in one bar?

There are 1,000 hectopascals in one bar, and this value is exact by definition.

How do I convert bars to hectopascals?

Multiply the number of bars by 1,000. For example, 10 bar × 1,000 = 10,000 hPa.

How many bars are in one hectopascal?

One hectopascal equals 0.001 bars. That is the reverse factor, 1 ÷ 1,000.

What is 10 bars in hectopascals?

10 bar = 10,000 hPa.

Is this bar to hPa 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.