Bar (bar)
Exactly 100 000 pascals.
What is a bar?
- Symbol
- bar
- Quantity
- Pressure
- Unit system
- metric
- Definition
- Exactly 100 000 pascals.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used for tire pressure, scuba tanks, espresso machines and industrial equipment in Europe.
Bar in other pressure units
- 1 bar = 100000 PaPascal
- 1 bar = 1000 hPaHectopascal
- 1 bar = 100 kPaBar to Kilopascal converter
- 1 bar = 0.1 MPaMegapascal
- 1 bar = 0.0001 GPaGigapascal
- 1 bar = 1000 mbarMillibar
- 1 bar ≈ 0.9869232667 atmBar to Standard atmosphere converter
- 1 bar ≈ 1.019716213 atTechnical atmosphere
- 1 bar ≈ 750.0616827 TorrTorr
- 1 bar ≈ 750.0615758 mmHgMillimeter of mercury
- 1 bar ≈ 14.50377377 psiBar to Pound-force per square inch converter
- 1 bar ≈ 0.01450377377 ksiKilopound-force per square inch
Bar quick reference
| Bar | Kilopascal | Standard atmosphere | Pound-force per square inch |
|---|---|---|---|
| 1 bar | = 100 kPa | ≈ 0.9869232667 atm | ≈ 14.50377377 psi |
| 10 bar | = 1000 kPa | ≈ 9.869232667 atm | ≈ 145.0377377 psi |
| 100 bar | = 10000 kPa | ≈ 98.69232667 atm | ≈ 1450.377377 psi |
| 1000 bar | = 100000 kPa | ≈ 986.9232667 atm | ≈ 14503.77377 psi |
Where the bar fits
The next smaller pressure unit is the technical atmosphere (at). 1 bar ≈ 1.019716213 at, and 1 at = 0.980665 bar.
The next larger pressure unit is the standard atmosphere (atm). 1 bar ≈ 0.9869232667 atm, and 1 atm = 1.01325 bar.
Frequently asked questions
- How many kilopascals are in one bar?
- One bar = 100 kPa (kilopascals).
- How many standard atmospheres are in one bar?
- One bar ≈ 0.9869232667 atm (standard atmospheres).
- How many psi are in one bar?
- One bar ≈ 14.50377377 psi (psi).