How to convert psi to bar
bar = x × 0.0689475729316836
PSI and bar must use the same reference. Converting gauge psi to bar still gives gauge bar, not absolute pressure.
Worked example
bar = 32 × 0.0689475729316836
32 psi = 2.206322 bar.
Conversion table in both directions
Values are generated by the same engine as the interactive converter.
| Input | psi → bar | bar → psi |
|---|---|---|
| 1 | 0.068948 | 14.503774 |
| 5 | 0.344738 | 72.518869 |
| 10 | 0.689476 | 145.037738 |
| 25 | 1.723689 | 362.594344 |
| 50 | 3.447379 | 725.188689 |
| 100 | 6.894757 | 1450.377377 |
Unit definitions and sources
Keep gauge and absolute pressure references consistent. Mercury-column values depend on their conventional reference conditions.
| Unit and system | Use | Definition | Relationship |
|---|---|---|---|
| Bar (bar); metric | Common units | Bar measures pressure. pa = (value in bar) × 100000. Common use: Pressure readings with a consistent reference. | Exact definition; numerical display may be rounded |
| Pound per square inch (psi); us | Common units | Pound per square inch measures pressure. pa = (value in psi) × 6894.757293168361. Common use: Pressure readings with a consistent reference. | Exact definition; numerical display may be rounded |
Sources: BIPM: International System of Units; NIST: SP 811 Appendix B.8: conversion factors; BIPM: SI prefixes
Precision of pressure conversions
These 2 pressure units convert through Pascal (Pa). 2 have an exact defined relationship to the base unit and 0 are conventional or measured values. Results and the tables on this page come from the same engine, so a table value can be checked against the converter directly.
Standard display shows up to six decimal places, switching to scientific notation for very large or small values. Calculation uses JavaScript binary floating point independently of display rounding, so extra digits are not a claim about measurement accuracy. Each unit lists its own source; a citation records where the definition comes from, not an independent review. See Conversion methodology for the review and correction process.