Bar to kPa
Convert bar to kilopascals for pressure specs, hydraulic systems and lab equipment. 1 bar = 100 kPa — table with common workshop values included.
Last updated: May 2026
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How to use this converter
Bar and kilopascals both measure pressure, seen on tire gauges, HVAC specs and lab equipment depending on the region. Use this converter when a spec lists bar but your gauge or standard uses kPa. kPa = bar × 100
Common reference values
| bar | kPa |
|---|---|
| 0.5 | 50 |
| 1 | 100 |
| 2.5 | 250 |
| 5 | 500 |
bar and kPa in the real world
The maths is simple because 1 bar is exactly 100 kPa, so you only move the decimal point two places. Seeing where each unit shows up makes a reading easier to sanity check.
- Standard atmospheric pressure is about 101.3 kPa, which is 1.013 bar.
- A car tyre at 2.4 bar is the same as 240 kPa.
- Weather reports often use hectopascals, and 1000 hPa equals 100 kPa, or 1 bar.
- Many HVAC, hydraulic and machine specifications are written in kPa, while European gauges and datasheets often show bar.
Because the factor is a clean 100, a quick check is easy: if a spec lists 250 kPa and your gauge shows roughly 2.5 bar, the two agree.
Frequently Asked Questions
What is the conversion factor from bar to kPa?
1 bar equals exactly 100 kilopascals (kPa). This is the standard conversion used in pressure engineering and specifications.
Where is this conversion used?
Bar to kPa conversion is essential in pressure specifications for industrial equipment, tire pressure standards, hydraulic systems, and technical documentation where different pressure units are specified.
Is bar or kPa more commonly used?
kPa (SI unit) is the standard in most technical specifications and international standards. Bar is still widely used in Europe and some industrial applications. Always check your equipment manual for the correct unit.