PSI to Bar Converter – Convert psi to bar

This converter applies the exact factor 1 psi = 0.0689475729 bar. Multiply any value in psi by 0.0689475729 to get bar: the worked example 100 psi × 0.0689475729 = 6.89 bar shows the arithmetic in a single line. Pascals are the SI language of physics, bars run European tire gauges and industrial hydraulics, psi fills American pumps and plumbing, and atmospheres anchor chemistry — four dialects for the same stress. The bridges are exact: 1 bar = 100,000 Pa by definition, 1 atm = 101,325 Pa exactly, and 1 psi = 6894.757293 Pa, so nothing here is measured — it is defined. For reverse conversions divide by 0.0689475729 instead — identical to multiplying by 14.503773773 — for example 6.89 bar ≈ 99.93 psi. Quick mini table: 1 psi = 0.0689476 bar; 5 psi = 0.344738 bar; 10 psi = 0.689476 bar; 50 psi = 3.45 bar; 100 psi = 6.89 bar. Tire sanity check: 32 psi reads 2.21 bar and about 220,600 Pa; a garage gauge that disagrees by more than a few percent is the problem, not the conversion.

1. 1

   Step 1

   Enter your value in psi (psi)

2. 2

   Step 2

   The converter multiplies it by the exact factor 0.0689475729

3. 3

   Step 3

   Read the result in bar (bar)

4. 4

   Step 4

   Hit swap to convert bar back to psi instantly

• 1

  Door-jamb stickers quote cold pressures — convert them before driving to the station

• 2

  1 atm ≈ 1.01325 bar ≈ 14.7 psi links all three everyday units

• 3

  Weather hPa = mbar, no conversion needed

• 4

  Industrial datasheets increasingly quote both kPa and psi — convert once, annotate

• Inflating to "2.3 psi" because the gauge was bar — check the unit before pumping

• Confusing gauge pressure (psi g) with absolute pressure (psia): a 14.7 psi gap

• Treating 1 bar as 1000 Pa instead of 100,000 Pa