21 Psi to Bar

21 psi ≈ 1.4479 bar

Calculation: bar = 21 psi × 0.0689476 ≈ 1.4479 bar

Psi to Bar Converter

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How much pressure is 21 psi?

21.0 psi (145 kPa) is comparable to the pressure inside an inflated balloon or a low-pressure tire.

What does 21 psi look like?

Illustration of an inflated balloon
21.0 psi (145 kPa) is comparable to the pressure inside an inflated balloon or a low-pressure tire.

How to Convert Psi to Bar

1 psi = 0.0689476 bar

Bar = Psi × 0.0689476

Example: 21 psi × 0.0689476 = 1.4479 bar

Reverse Conversion

To convert bar back to psi:

  • Remember, 1 bar equals 14.5038 psi.
  • To convert 1.4479 bar to psi, multiply 1.4479 x 14.5038, resulting in 21 psi.

21 psi is also equal to:

  • 144790 pascal
  • 144.79 kPa
About these units

Psi: Imperial/US customary pressure unit equal to one pound-force per square inch.

Bar: Metric pressure unit equal to exactly 100,000 pascals.

Frequently Asked Questions

How much is 21 psi in bar?

21 psi equals 1.4479 bar. This is calculated by multiplying 21 by the conversion factor 0.0689476.

What does 21 psi look like in bar?

21 psi (1.4479 bar) is standard passenger car tire pressure range (32-35 psi typical).

How do you calculate 21 psi to bar?

Multiply 21 by the conversion factor 0.0689476. The calculation is 21 × 0.0689476 = 1.4479 bar. This factor is defined by international measurement standards.

Share This Calculation

21 psi = 1.4479 bar
21 psi = 1.4479 bar — conversion chart

Nearby Conversions

11 psi0.7584 bar 12 psi0.8274 bar 13 psi0.8963 bar 14 psi0.9653 bar 15 psi1.034 bar 16 psi1.103 bar 17 psi1.172 bar 18 psi1.241 bar 19 psi1.31 bar 20 psi1.379 bar 22 psi1.517 bar 23 psi1.586 bar 24 psi1.655 bar 25 psi1.724 bar 26 psi1.793 bar 27 psi1.862 bar 28 psi1.931 bar 29 psi1.999 bar 30 psi2.068 bar 31 psi2.137 bar

For general conversions between psi and bar, see the psi to bar converter.

Also convert Psi to:

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 atm = 101 325 Pa by definition (BIPM). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.