Convert Bar to Kilopascals
1 bar equals 100 kilopascals (kPa).
1 bar = 100 kPa
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk bar to kilopascal converter to paste a column from Excel.
How to Convert Bar to Kilopascal
- 1 bar = 100 kPa
- 1 kPa = 0.01 bar
- Example: convert 15 bar to kPa: 15 bar = 15 × 100 kPa = 1500 kPa
Formula
kPa = bar × 100
Derivation from SI units:
- 1 bar = 10⁵ Pa (exact, by definition)
- 1 kPa = 10³ Pa
- 1 bar = 100000 Pa ÷ 1000 Pa per kPa = 100 kPa
Both units are defined exactly, so the factor is exact. Bar definition: bar; Kilopascal definition: kilopascal.
Worked examples
- A tyre pressure of 2.2 bar is 220 kPa.
2.2 bar × 100 = 220 kPa - A PN16 valve is rated for 16 bar, which is 1600 kPa.
16 bar × 100 = 1600 kPa
Bar to Kilopascal conversion table
| Bar | Kilopascals (kPa) |
|---|---|
| 0.01 bar | 1 kPa |
| 0.05 bar | 5 kPa |
| 0.1 bar | 10 kPa |
| 0.25 bar | 25 kPa |
| 0.5 bar | 50 kPa |
| 1 bar | 100 kPa |
| 1.01325 bar | 101.325 kPa |
| 1.5 bar | 150 kPa |
| 2 bar | 200 kPa |
| 2.5 bar | 250 kPa |
| 3 bar | 300 kPa |
| 4 bar | 400 kPa |
| 5 bar | 500 kPa |
| 6 bar | 600 kPa |
| 7 bar | 700 kPa |
| 8 bar | 800 kPa |
| 10 bar | 1000 kPa |
| 12 bar | 1200 kPa |
| 16 bar | 1600 kPa |
| 20 bar | 2000 kPa |
| 25 bar | 2500 kPa |
| 40 bar | 4000 kPa |
| 100 bar | 10000 kPa |
| 200 bar | 20000 kPa |
| 300 bar | 30000 kPa |
Where it's used
European equipment is labelled in bar, while North American codes and many SI documents use kPa. Multiplying by 100 converts bar to kPa exactly.
Bar to other pressure units
| Conversion | 1 bar equals |
|---|---|
| bar to pascal | 100000 Pa |
| bar to kilopascal | 100 kPa |
| bar to megapascal | 0.1 MPa |
| bar to psi | 14.50377377 psi |
| bar to millibar | 1000 mbar |
| bar to decibar | 10 dbar |
| bar to torr | 750.0616827 Torr |
| bar to millimeter of mercury | 750.0615758 mmHg |
| bar to millimeter of water | 10197.16213 mmH₂O |
| bar to centimeter of water | 1019.716213 cmH₂O |
| bar to inch of water | 401.463076 inH₂O |
| bar to inch of water (60 °F) | 401.864652 inH₂O (60 °F) |
| bar to inch of mercury | 29.5299833 inHg |
| bar to atmosphere | 0.9869232667 atm |
| bar to barye | 1000000 Ba |
Frequently asked questions
How many kPa are in a bar?
Exactly 100 kPa, so 6 bar = 600 kPa.
How many kilopascals are in 1 bar?
1 bar = 100 kPa.
How do I convert bar to kilopascals?
Multiply the value in bar by 100. For example, 15 bar × 100 = 1500 kPa.
Is the bar to kPa conversion exact?
Yes. Both units are defined exactly, and 1 bar is exactly 100 kPa.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "bar".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Bar to Kilopascals. Retrieved October 17, 2026, from https://scientificconverters.com/pressure/bar-to-kilopascal/
IEEE
Scientific Converters, "Convert Bar to Kilopascals," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/pressure/bar-to-kilopascal/