Convert atmosphere (atm) to millibar (mbar).
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Millibar to Atmosphere Converter (mbar to atm)
Convert millibar (mbar) to atmosphere (atm).Unit Converter · Pressure
Quick answer
1 millibar (mbar) is approximately equal to 0.00098692 atmospheres (atm). 1 atmosphere (atm) is equal to 1,013.25 millibars (mbar).
To convert mbar to atm, multiply the value in millibars by 0.0009869233 (or divide by 1,013.25). For example, 10 mbar = 0.00986923 atm, and 100 mbar = 0.09869233 atm.
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Quick reference — millibar to atmosphere
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How to convert millibars to atmospheres
How many atmospheres are in a millibar? 1 millibar is about 0.00098692 atmospheres. This free mbar to atm converter and millibar to atmosphere calculator gives the answer instantly for any value.
To convert millibar (mbar) to atmosphere (atm), multiply the value in millibars by 0.0009869233, or divide it by 1,013.25.
atm = mbar × 0.0009869233
- 1
Take the value in millibars
For example, 25 mbar.
- 2
Multiply by 0.0009869233
25 × 0.0009869233.
- 3
Read the answer in atmospheres
25 mbar = 0.02467308 atm.
Millibar to Atmosphere conversion table
Common values from 1 to 1,000 millibars converted to atmospheres.
| Millibar (mbar) | Atmosphere (atm) |
|---|---|
| 1 mbar | 0.00098692 atm |
| 2 mbar | 0.00197385 atm |
| 3 mbar | 0.00296077 atm |
| 4 mbar | 0.00394769 atm |
| 5 mbar | 0.00493462 atm |
| 6 mbar | 0.00592154 atm |
| 7 mbar | 0.00690846 atm |
| 8 mbar | 0.00789539 atm |
| 9 mbar | 0.00888231 atm |
| 10 mbar | 0.00986923 atm |
| 15 mbar | 0.01480385 atm |
| 20 mbar | 0.01973847 atm |
| 25 mbar | 0.02467308 atm |
| Millibar (mbar) | Atmosphere (atm) |
|---|---|
| 30 mbar | 0.0296077 atm |
| 40 mbar | 0.03947693 atm |
| 50 mbar | 0.04934616 atm |
| 60 mbar | 0.0592154 atm |
| 70 mbar | 0.06908463 atm |
| 75 mbar | 0.07401925 atm |
| 80 mbar | 0.07895386 atm |
| 90 mbar | 0.08882309 atm |
| 100 mbar | 0.09869233 atm |
| 250 mbar | 0.24673082 atm |
| 500 mbar | 0.49346163 atm |
| 1,000 mbar | 0.98692327 atm |
About millibars and atmospheres
Millibar (mbar)
A millibar (mbar) is 100 pascals, the same as a hectopascal. Weather forecasts quote atmospheric pressure in millibars.
Atmosphere (atm)
A standard atmosphere (atm) is exactly 101,325 pascals, the average air pressure at sea level.
mbar to atm: common questions
- How many atmospheres are in 1 millibar?
- 1 millibar (mbar) is approximately equal to 0.00098692 atmospheres (atm). In short: 1 mbar ≈ 0.00098692 atm.
- How do I convert millibars to atmospheres?
- To convert mbar to atm, multiply the value in millibars by 0.0009869233 (or divide by 1,013.25). For example, 5 mbar = 0.00493462 atm.
- How do I convert atmospheres to millibars?
- To convert atm to mbar, multiply the value in atmospheres by 1,013.25. Or open the Atmosphere to Millibar converter, which does it for you.
- What is 10 mbar in atm, and what is 100 mbar?
- 10 mbar = 0.00986923 atm, and 100 mbar = 0.09869233 atm. The table above lists more values from 1 to 1,000.
- Is this mbar to atm converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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