What is 4 PSI in bar?

4 PSI equals 0.276 bar, or 27.6 kPa. Multiply PSI by 0.0689476 to convert.

How do I convert 4 PSI to bar without a calculator?

Divide by 14.5 for a quick estimate: 4 ÷ 14.5 ≈ 0.28 bar. The exact answer is 0.276 bar.

4 PSI may be outside typical passenger-car range (30–35 PSI). Consult your vehicle's door-jamb sticker.

4 PSI = 27.6 kPa. Tire pressures in Canada and Europe are often given in kPa.

4 PSI equals 0.276 bar.

Formula: PSI × 0.0689476 = bar

4 PSI =

0.276bar

kPa

27.579 kPa

MPa

0.028 MPa

atm

0.272 atm

Computed to 3 decimal places using factor 0.0689476. For engineering or safety-critical uses verify against a calibrated reference.

Reference table

pounds per square inch (PSI)	bar (bar)	kPa	MPa
1 PSI	0.069 bar	6.895 kPa	0.007 MPa
2 PSI	0.138 bar	13.79 kPa	0.014 MPa
3 PSI	0.207 bar	20.684 kPa	0.021 MPa
4 PSI	0.276 bar	27.579 kPa	0.028 MPa
5 PSI	0.345 bar	34.474 kPa	0.034 MPa
6 PSI	0.414 bar	41.369 kPa	0.041 MPa
7 PSI	0.483 bar	48.263 kPa	0.048 MPa
8 PSI	0.552 bar	55.158 kPa	0.055 MPa
9 PSI	0.621 bar	62.053 kPa	0.062 MPa
10 PSI	0.689 bar	68.948 kPa	0.069 MPa
11 PSI	0.758 bar	75.842 kPa	0.076 MPa
12 PSI	0.827 bar	82.737 kPa	0.083 MPa

By use case

Passenger car (street)

typical door-jamb spec

Sport / track

warm track use

Turbo boost

gauge pressure

Bicycle (road)

700c high pressure

Other PSI values

Try any value

Interactive PSI ↔ bar converter

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FAQ

What is 4 PSI in bar?: 4 PSI equals 0.276 bar, or 27.6 kPa. Multiply PSI by 0.0689476 to convert.
How do I convert 4 PSI to bar without a calculator?: Divide by 14.5 for a quick estimate: 4 ÷ 14.5 ≈ 0.28 bar. The exact answer is 0.276 bar.
Is 4 PSI a good tire pressure?: 4 PSI may be outside typical passenger-car range (30–35 PSI). Consult your vehicle's door-jamb sticker.
What is 4 PSI in kPa?: 4 PSI = 27.6 kPa. Tire pressures in Canada and Europe are often given in kPa.

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