4 Bar to Pounds per square inch (4 bar to psi)
4 Bar equals 58.0152 Pounds per square inch. Below is the formula, the worked arithmetic, and what 4 bar typically represents in everyday use.
Formula and worked answer
Formula
psi = bar × 14.5038
Substituting 4 for bar: 4 × 14.5038 = 58.0152 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 4 Bar represent?
4 bar (58.02 psi) is a typical recommended cold-tyre pressure for fully loaded European light commercial vehicles like the Ford Transit, Mercedes-Benz Sprinter, and Volkswagen Crafter and a frequent reference on metric LCV door-jamb stickers across the EU haulage industry. Converted to imperial the figure is 58.02 psi, which sits just above the US "58 psi" pump-gauge increment. The 0.02 psi gap is small enough to ignore in field maintenance but matters in fleet telematics, where the difference between under-inflation and correct pressure drives a 1-3% fuel-consumption penalty across a working week of urban delivery routes that fleet managers track on cost-per-mile dashboards.
Values near 4 bar
- 1 bar=14.5038 psi
- 2 bar=29.0076 psi
- 3 bar=43.5114 psi
- 5 bar=72.519 psi
- 6 bar=87.0228 psi
- 7 bar=101.5266 psi
- 8 bar=116.0304 psi
- 9 bar=130.5342 psi
bar to psi reference table around 4
| bar | psi |
|---|---|
| 1 bar | 14.5038 psi |
| 2 bar | 29.0076 psi |
| 3 bar | 43.5114 psi |
| 4 bar | 58.0152 psi |
| 5 bar | 72.519 psi |
| 6 bar | 87.0228 psi |
| 8 bar | 116.0304 psi |
| 9 bar | 130.5342 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.