Bar to kPa Converter

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Convert bar to kilopascals using the exact relation 1 bar = 100 kPa. Anchors: 1 bar = 100 kPa, 2.5 bar = 250 kPa (typical European tire spec), 10 bar = 1,000 kPa (1 MPa), 250 bar = 25,000 kPa (high-pressure hydraulics). Useful when European pressure specifications need to be expressed in kPa. Browser-local conversion.

Bar
Kilopascal (kPa)

Bar → Kilopascal (kPa)

Quick reference table

BarKilopascal (kPa)
1 bar100 kPa
2 bar200 kPa
5 bar500 kPa
10 bar1000 kPa
25 bar2500 kPa
50 bar5000 kPa
100 bar10000 kPa

Glossary

Bar

The bar is a non-SI metric pressure unit equal to exactly 100,000 Pa, very close to atmospheric pressure at sea level (1 atm = 1.01325 bar). Widely used in European engineering, automotive specs (turbo boost, fuel-rail pressure), tire pressure (2–3 bar typical), scuba diving and weather charts. Not part of SI but accepted for use with SI.

Kilopascal (kPa)

A kilopascal equals 1,000 pascals. It is the everyday metric pressure unit for tire pressure outside the US (32 psi ≈ 220 kPa), atmospheric pressure (~101 kPa at sea level), HVAC duct pressure and blood-pressure readings reported in metric form (120/80 mmHg ≈ 16.0/10.7 kPa). The standard atmosphere equals 101.325 kPa exactly.

Metric / SI pressure

In the metric system, pressure is reported in pascals (SI base) or its multiples — kilopascal (kPa, 10³ Pa), megapascal (MPa, 10⁶ Pa) — and the related non-SI unit bar (10⁵ Pa). The millibar/hectopascal (mbar = hPa = 100 Pa) is used in meteorology. All metric units relate by exact powers of ten, so conversions between them are simple shifts of decimal point.

Imperial / US pressure

US engineering and automotive primarily report pressure in pounds per square inch (psi). 1 psi ≈ 6,894.76 Pa, defined as one pound-force per square inch. Standard atmospheric pressure is 14.696 psi. The closely related "psi-gauge" (psi-g) measures pressure above atmospheric, while "psi-absolute" (psi-a) measures total pressure including atmospheric.

Related tools

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