400 Psi to Bar

400 psi ≈ 27.579 bar

Calculation: bar = 400 psi × 0.0689476 ≈ 27.579 bar

Psi to Bar Converter

Choose the type of measurement to convert
Select the source unit to convert from
Select the target unit to convert to
Enter a numeric value or fraction to convert
Sig. Figures:

How much pressure is 400 psi?

400 psi (2,758 kPa) is comparable to the pressure inside a CO₂ cartridge or small gas cylinder.

What does 400 psi look like?

Illustration of a CO2 cartridge
400 psi (2,758 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: 400 psi × 0.0689476 = 27.579 bar

Reverse Conversion

To convert bar back to psi:

  • Remember, 1 bar equals 14.5038 psi.
  • To convert 27.579 bar to psi, multiply 27.579 x 14.5038, resulting in 400 psi.

400 psi is also equal to:

  • 2757900 pascal
  • 2757.9 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 400 psi in bar?

400 psi equals 27.579 bar. This is calculated by multiplying 400 by the conversion factor 0.0689476.

What does 400 psi look like in bar?

400 psi (27.579 bar) is very high pressure — scuba tanks (3,000 psi) or industrial cylinders.

How do you calculate 400 psi to bar?

Multiply 400 by the conversion factor 0.0689476. The calculation is 400 × 0.0689476 = 27.579 bar. This factor is defined by international measurement standards.

Share This Calculation

400 psi = 27.579 bar
400 psi = 27.579 bar — conversion chart

Nearby Conversions

350 psi24.13 bar 355 psi24.48 bar 360 psi24.82 bar 365 psi25.17 bar 370 psi25.51 bar 375 psi25.86 bar 380 psi26.2 bar 385 psi26.54 bar 390 psi26.89 bar 395 psi27.23 bar 405 psi27.92 bar 410 psi28.27 bar 415 psi28.61 bar 420 psi28.96 bar 425 psi29.3 bar 430 psi29.65 bar 435 psi29.99 bar 440 psi30.34 bar 445 psi30.68 bar 450 psi31.03 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.