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Pressure

Convert millibars to bars

1 mbar=0.001bar

Use the converter below to change any millibars value into bars instantly — with formula, conversion table, and real-world examples.

0.001

Conversion formula

Forward
bars = millibars × 0.001
Reverse
millibars = bars × 1,000

Example: 10 mbar × 0.001 = 0.01 bar.

About both units

From

Millibar

mbar

The millibar equals 100 pascals or 1/1000 bar. It is the traditional unit for atmospheric pressure in meteorology (now called hectopascal, hPa, but numerically identical). Sea-level pressure averages 1013 mbar.

Real-world: Sea-level average: 1013 mbar. Deep low-pressure storm: below 980 mbar. Hurricane eye: below 920 mbar.
Read full millibar reference →
To

Bar

bar

The bar equals 100,000 pascals — slightly less than one atmosphere (1.01325 bar). It is a convenient unit for everyday pressures: tyre pressures, diving depth, weather fronts. Common in European engineering.

Real-world: Car tyre: 2.0–2.5 bar. SCUBA at 10 m depth: 2 bar absolute. Fire hose: 5–7 bar.
Read full bar reference →

Millibar to Bar conversion table

Common millibars to bars values for quick reference.

Millibar (mbar)Bar (bar)
1 mbar0.001 bar
5 mbar0.005 bar
10 mbar0.01 bar
25 mbar0.025 bar
50 mbar0.05 bar
100 mbar0.1 bar
200 mbar0.2 bar
500 mbar0.5 bar
1,000 mbar1 bar
5,000 mbar5 bar

Tips & common mistakes

Quick tips

  • 1 mbar = 1 hPa = 100 Pa.
  • Weather reports: "1013 hPa" and "1013 mbar" mean the same thing.
  • Hurricane strength correlates with central pressure drop.

Avoid these

  • Confusing mbar and bar — 1000× difference.
  • Using mbar for industrial pressures — too small.
  • Mixing hPa and mbar in casual writing without noting they are equal.

Frequently asked questions

How many bars in a millibar?
One millibar equals 0.001 bars.
How do I convert millibars to bars?
Multiply the millibar value by 0.001 to get the equivalent in bars.
What is 100 millibars in bars?
100 millibars equals 0.1 bars.
Is a millibar bigger than a bar?
No. 1 millibar equals 0.001 bars, so one millibar is smaller.
How to convert millibars to bars without a calculator?
Multiply by 0 for a quick estimate; use a calculator for precise results.

Related pressure conversions

📊 See full comparison matrix →

More from Millibar

mbar → Pa
1 = 100 Pa
mbar → kPa
1 = 0.1 kPa
mbar → MPa
1 = 0.0001 MPa
mbar → psi
1 = 0.0145 psi
mbar → atm
1 = 0.0009869 atm
mbar → mmHg
1 = 0.7501 mmHg
mbar → Torr
1 = 0.7501 Torr
mbar → inHg
1 = 0.02953 inHg

More to Bar

Pa → bar
1 = 1.0000e-5 bar
kPa → bar
1 = 0.01 bar
MPa → bar
1 = 10 bar
psi → bar
1 = 0.06895 bar
atm → bar
1 = 1.01325 bar
mmHg → bar
1 = 0.001333 bar
Torr → bar
1 = 0.001333 bar
inHg → bar
1 = 0.03386 bar

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