21 Bar to Psi

21 bar ≈ 304.58 psi

Calculation: psi = 21 bar × 14.5038 ≈ 304.58 psi

Bar to Psi Converter

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How much pressure is 21 bar?

305 psi (2,100 kPa) is comparable to the pressure inside a CO₂ cartridge or small gas cylinder.

What does 21 bar look like?

Illustration of a CO2 cartridge
305 psi (2,100 kPa) is comparable to the pressure inside a CO₂ cartridge or small gas cylinder.

How to Convert Bar to Psi

1 bar = 14.5038 psi

Psi = Bar × 14.5038

Example: 21 bar × 14.5038 = 304.58 psi

Reverse Conversion

To convert psi back to bar:

  • Remember, 1 psi equals 0.0689476 bar.
  • To convert 304.58 psi to bar, multiply 304.58 x 0.0689476, resulting in 21 bar.

21 bar is also equal to:

  • 2100000 pascal
  • 2100 kPa
About these units

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

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

Frequently Asked Questions

How much is 21 bar in psi?

21 bar equals 304.58 psi. This is calculated by multiplying 21 by the conversion factor 14.5038.

What does 21 bar look like in psi?

21 bar (304.58 psi) is high pressure — scuba regulators or hydraulic lines.

How do you calculate 21 bar to psi?

Multiply 21 by the conversion factor 14.5038. The calculation is 21 × 14.5038 = 304.58 psi. This factor is defined by international measurement standards.

Share This Calculation

21 bar = 304.579 psi
21 bar = 304.579 psi — conversion chart

Nearby Conversions

11 bar159.5 psi 12 bar174 psi 13 bar188.5 psi 14 bar203.1 psi 15 bar217.6 psi 16 bar232.1 psi 17 bar246.6 psi 18 bar261.1 psi 19 bar275.6 psi 20 bar290.1 psi 22 bar319.1 psi 23 bar333.6 psi 24 bar348.1 psi 25 bar362.6 psi 26 bar377.1 psi 27 bar391.6 psi 28 bar406.1 psi 29 bar420.6 psi 30 bar435.1 psi 31 bar449.6 psi

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

Also convert Bar 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.