14.503774
psi
1
bar
0.1
MPa
100,000
Pa
14.503774
psi
1
bar
0.1
MPa
100,000
Pa
The Kilopascals to PSI Converter converts pressure from kilopascals (kPa) to pounds per square inch (PSI). The conversion factor is 1 kPa = 0.145038 PSI. The kilopascal is one of the most practical metric pressure units, widely used in automotive specifications, meteorology, and engineering applications around the world.
While the Pascal is the SI unit of pressure, it represents an impractically small amount for most everyday applications. The kilopascal (1,000 Pascals) strikes a better balance: standard atmospheric pressure is 101.325 kPa, tire pressures range from 200–250 kPa, and water system pressures are typically 300–500 kPa. These are manageable numbers compared to the six-digit Pascal equivalents.
Kilopascal-to-PSI conversion is especially important in the automotive industry. Japanese, Korean, and many European manufacturers specify tire pressures in kPa on vehicle placard stickers. When these vehicles are serviced in the United States, mechanics need to convert to PSI for their pressure gauges. A sticker reading '230 kPa' needs to be translated to '33 PSI' for proper inflation.
In engineering and construction, material strengths and structural loads may be specified in kPa internationally but need conversion to PSI for American building codes and standards. Concrete compressive strength, soil bearing capacity, and wind loads all use pressure units that may differ between international and US practice. Our converter provides output in both PSI and bar for maximum flexibility.
The formula: PSI = kPa × 0.145038. This derives from: 1 kPa = 1,000 Pa, and 1 PSI = 6,894.757 Pa, so 1 kPa = 1,000 / 6,894.757 ≈ 0.145038 PSI.
For bars: bar = kPa ÷ 100 (exact, since 1 bar = 100 kPa).
Common conversions: 100 kPa = 14.504 PSI ≈ 1 bar, 200 kPa = 29.008 PSI (low tire pressure), 250 kPa = 36.260 PSI (typical tire), 101.325 kPa = 14.696 PSI (1 atm).
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1 atm = 101.325 kPa
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Recommended tire: 240 kPa ≈ 35 PSI
1 kPa = 0.145038 PSI. Conversely, 1 PSI ≈ 6.895 kPa.
200 kPa = 29.01 PSI. This is on the low end for car tire pressure.
PSI = kPa × 0.145038. For example, 300 kPa × 0.145038 = 43.51 PSI.
250 kPa = 36.26 PSI. This is a common recommended tire pressure for mid-size sedans.
Divide by 100. Since 1 bar = 100 kPa exactly, this is a simple calculation. For example, 250 kPa = 2.5 bar.
Japan and most countries outside the US use the metric system. Tire pressures in kPa are standard in Japanese, Korean, and most European vehicle documentation.
Normal blood pressure (120/80 mmHg) is approximately 16.0/10.7 kPa. Medical devices sometimes display kPa, especially outside the US.
500 kPa = 72.52 PSI. This is about the pressure in some heavy-duty truck tires.
Both are equally precise — accuracy depends on the measuring instrument, not the unit. kPa has the advantage of being part of the SI system, making conversions to other SI units straightforward.
Standard atmospheric pressure is 101.325 kPa (exactly, by definition). This is 14.696 PSI or 1.01325 bar.
Roboculator Team
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