Convert between kilopascal (kPa) and bar for pressure measurements — 1 bar = 100 kPa exactly.
Select conversion direction:
Pressure Unit Conversion:
1 Bar (bar) = 100 Kilopascal (kPa) | 1 Kilopascal (kPa) = 0.01 Bar (bar)
bar = kPa × 0.01 | kPa = bar × 100 (Results shown with 4 decimal places)
Kilopascal (10³ Pa) — used for tire pressure, industrial systems,气象
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Quick conversions (common pressure values) - click to auto-fill:
Useful for pressure calculations? Share with mechanics, engineers, or anyone working with fluid systems:
Understanding pressure units for automotive, industrial, and meteorological applications.
| Unit | Symbol | Definition | Common Uses |
|---|---|---|---|
| Kilopascal | kPa | 1 kPa = 1000 Pascals (Pa) 1 kPa ≈ 0.00987 atm (标准大气压) |
Tire pressure, HVAC systems, meteorology (atmospheric pressure), laboratory equipment |
| Bar | bar | 1 bar = 100,000 Pascals (Pa) 1 bar ≈ 0.987 atm (接近标准大气压) |
Automotive (engine oil pressure), industrial hydraulics/pneumatics, fluid power systems |
| Kilopascal (kPa) | ≈ | Bar (bar) | Application Example |
|---|---|---|---|
| 50 kPa | ≈ | 0.5000 bar | Low-pressure pneumatic systems |
| 100 kPa | ≈ | 1.0000 bar | Standard industrial reference pressure |
| 101.325 kPa | ≈ | 1.0133 bar | Sea-level standard atmospheric pressure |
| 200 kPa | ≈ | 2.0000 bar | Passenger car tire pressure (typical) |
| 500 kPa | ≈ | 5.0000 bar | Heavy-duty truck tire pressure |
| 1000 kPa | ≈ | 10.0000 bar | Hydraulic systems (e.g., construction machinery) |
About kilopascal, bar, and pressure unit conversions
The conversion is based on the definition of the Pascal (SI unit of pressure):
1 bar = 100 kPa = 100,000 Pa
1 kPa = 0.01 bar = 1000 Pa
Conversion rule: Multiply by 0.01 for kPa→bar; multiply by 100 for bar→kPa
The choice depends on the application and regional standards:
Standard atmospheric pressure (sea level) is a key reference point:
This is why 101.325 kPa (1.0133 bar) is included in the quick conversion buttons — it’s the most common reference pressure.
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