Millibar (mbar)
One thousandth of a bar (100 pascals).
What is a millibar?
- Symbol
- mbar
- Quantity
- Pressure
- Unit system
- metric
- Definition
- One thousandth of a bar (100 pascals).
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used in meteorology and aviation for air pressure. One millibar equals one hectopascal.
Millibar in other pressure units
- 1 mbar = 100 PaPascal
- 1 mbar = 1 hPaHectopascal
- 1 mbar = 0.1 kPaKilopascal
- 1 mbar = 0.0001 MPaMegapascal
- 1 mbar = 1e-7 GPaGigapascal
- 1 mbar = 0.001 barBar
- 1 mbar ≈ 0.0009869232667 atmStandard atmosphere
- 1 mbar ≈ 0.001019716213 atTechnical atmosphere
- 1 mbar ≈ 0.7500616827 TorrTorr
- 1 mbar ≈ 0.7500615758 mmHgMillimeter of mercury
- 1 mbar ≈ 0.01450377377 psiPound-force per square inch
- 1 mbar ≈ 0.00001450377377 ksiKilopound-force per square inch
Millibar quick reference
| Millibar | Bar | Pound-force per square inch | Pascal |
|---|---|---|---|
| 1 mbar | = 0.001 bar | ≈ 0.01450377377 psi | = 100 Pa |
| 10 mbar | = 0.01 bar | ≈ 0.1450377377 psi | = 1000 Pa |
| 100 mbar | = 0.1 bar | ≈ 1.450377377 psi | = 10000 Pa |
| 1000 mbar | = 1 bar | ≈ 14.50377377 psi | = 100000 Pa |
Where the millibar fits
The next smaller pressure unit is the pascal (Pa). 1 mbar = 100 Pa, and 1 Pa = 0.01 mbar.
The next larger pressure unit is the torr (Torr). 1 mbar ≈ 0.7500616827 Torr, and 1 Torr ≈ 1.333223684 mbar.
Frequently asked questions
- How many bars are in one millibar?
- One millibar = 0.001 bar (bars).
- How many psi are in one millibar?
- One millibar ≈ 0.01450377377 psi (psi).
- How many pascals are in one millibar?
- One millibar = 100 Pa (pascals).