420 Psi to Bar

420 psi ≈ 28.958 bar

Calculation: bar = 420 psi × 0.0689476 ≈ 28.958 bar

Psi to Bar Converter

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How much pressure is 420 psi?

420 psi (2,896 kPa) is comparable to the pressure inside a CO₂ cartridge or small gas cylinder.

What does 420 psi look like?

Illustration of a CO2 cartridge
420 psi (2,896 kPa) is comparable to the pressure inside a CO₂ cartridge or small gas cylinder.

Did you know? CO2 cartridge is 3,000 kPa.

Small CO2 cartridges (for soda makers, paintball) operate at about 3,000 kPa (435 psi) at room temperature.

How to Convert Psi to Bar

1 psi = 0.0689476 bar

Bar = Psi × 0.0689476

Example: 420 psi × 0.0689476 = 28.958 bar

Reverse Conversion

To convert bar back to psi:

  • Remember, 1 bar equals 14.5038 psi.
  • To convert 28.958 bar to psi, multiply 28.958 x 14.5038, resulting in 420 psi.

420 psi is also equal to:

  • 2895800 pascal
  • 2895.8 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 420 psi in bar?

420 psi equals 28.958 bar. This is calculated by multiplying 420 by the conversion factor 0.0689476.

What does 420 psi look like in bar?

420 psi (28.958 bar) is very high pressure — scuba tanks (3,000 psi) or industrial cylinders.

How do you calculate 420 psi to bar?

Multiply 420 by the conversion factor 0.0689476. The calculation is 420 × 0.0689476 = 28.958 bar. This factor is defined by international measurement standards.

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420 psi = 28.958 bar
420 psi = 28.958 bar — conversion chart

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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.