Convert bar to kPa
Convert bar to kPa instantly. 1 bar = 100 kPa. Formula, worked examples and a quick reference table.
Last updated
One bar equals 100 kilopascals. To convert any number of bars to kilopascals, multiply by 100.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Pressure conversions are dominated by one everyday task: inflating a tyre. The United States and the United Kingdom quote psi, most of Europe uses bar, Canada and Australia use kilopascals, and the figure on the door jamb may not match the unit on the gauge. Beyond tyres, the same conversions serve weather reporting, diving, and any engineering work where a specification and an instrument were made in different markets.
bar to kPa formula
To go the other way, use bar = kilopascal ÷ 100.
About these units
One bar is 100,000 pascals, very close to average atmospheric pressure at sea level — which is why it was chosen.
The kilopascal is 1,000 pascals. It is the standard pressure unit in Canada, Australia and most engineering work, including tyre pressures.
Bar is also written bars. Kilopascal is also written kilopascals.
Sources
bar to kPa conversion table
| Bar | Kilopascal |
|---|---|
| 1 bar | 100 kPa |
| 2 bar | 200 kPa |
| 3 bar | 300 kPa |
| 5 bar | 500 kPa |
| 10 bar | 1,000 kPa |
| 20 bar | 2,000 kPa |
| 25 bar | 2,500 kPa |
| 50 bar | 5,000 kPa |
| 100 bar | 10,000 kPa |
| 250 bar | 25,000 kPa |
| 500 bar | 50,000 kPa |
| 1,000 bar | 100,000 kPa |
Frequently asked questions
How many kilopascals are in a bar? +
There are 100 kilopascals in one bar.
What is 10 bar in kPa? +
10 bar equals 1,000 kPa. Multiply 10 by 100.
How do I convert kilopascal back to bar? +
Use bar = kilopascal ÷ 100. The converter above handles both directions, or see our dedicated kPa to bar page.
How accurate is this bar to kilopascal conversion? +
The factor used is 100, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate bar to kPa in my head? +
Multiply by 100. That matches the true factor of 100 exactly, so no adjustment is needed for a mental estimate.