1.5 Bar to Pounds per square inch (1.5 bar to psi)
1.5 Bar equals 21.7557 Pounds per square inch. Below is the formula, the worked arithmetic, and what 1.5 bar typically represents in everyday use.
Formula and worked answer
Formula
psi = bar × 14.5038
Substituting 1.5 for bar: 1.5 × 14.5038 = 21.7557 psi. The factor 14.5038 comes from the exact international definition of the Bar relative to the Pound per square inch, so this answer is precise rather than rounded.
What does 1.5 Bar represent?
1.5 bar (21.76 psi) is a typical recommended cold-tyre pressure for European-market urban scooters and small motorcycles and a frequent reference on metric-spec moped door-jamb stickers. Converted to imperial the figure is 21.76 psi, which sits between the US "21 psi" and "22 psi" standard pump-gauge increments. The 0.24 psi gap matters when American riders import European-spec mopeds: a 1.5 bar manufacturer recommendation naively translated to "22 psi" over-inflates by about 1 psi, which on a low-volume scooter tyre is enough to harden the ride noticeably and reduce traction on damp urban cobbles, where the contact patch deformation under load is already minimal.
Values near 1.5 bar
- 0.5 bar=7.2519 psi
- 2.5 bar=36.2595 psi
- 3.5 bar=50.7633 psi
- 4.5 bar=65.2671 psi
- 5.5 bar=79.7709 psi
- 6.5 bar=94.2747 psi
bar to psi reference table around 1.5
| bar | psi |
|---|---|
| 1 bar | 14.5038 psi |
| 1.5 bar | 21.7557 psi |
| 2 bar | 29.0076 psi |
| 3 bar | 43.5114 psi |
| 7 bar | 101.5266 psi |
Convert a different value
Looking for a different number of Bar? Use the full bar to psi converter to enter any value, see the worked formula, and read the full background on the Bar and the Pound per square inch. To go the other direction, the psi to bar converter applies the inverse factor and is the page to bookmark if you usually start in Pounds per square inch.