Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Convert Bar to PSI instantly with an exact, accurate formula -- no sign-up, no ads blocking the result.
This tool converts a pressure measurement in Bar into its exact equivalent in PSI, using the fixed factor 14.5037738. Pressure units show up constantly in tire inflation, HVAC/plumbing specs, weather reports, and industrial equipment -- PSI dominates US tire gauges and pressure specs, while bar and kPa are the metric standards used in most of the rest of the world and in scientific/engineering contexts. One bar equals exactly 100,000 pascals, close to average sea-level atmospheric pressure (1.01325 bar). One psi (pound-force per square inch) equals about 6,894.76 pascals, or roughly 0.0689476 bar.
Enter your value and confirm the "From Unit" dropdown is set to Bar -- the result grid updates instantly, showing your value converted into every unit in this pressure category at once (not just PSI), so you can see multiple equivalent measurements without switching tools. There's no button to press and nothing is sent to a server, so it works the same on a phone with no signal as it does on a desktop.
PSI = Bar × 14.5037738
PSI (pounds per square inch) is a US customary pressure unit; bar and kPa (kilopascals) are metric, with the pascal defined as one newton of force per square meter -- these unit systems don't share a common simple-fraction relationship the way length units do, so the conversion factors (like 1 PSI = 0.0689475729 bar) are precise but not round numbers.
| Bar | PSI |
|---|---|
| 1 | 14.5037738 |
| 5 | 72.518869 |
| 10 | 145.037738 |
| 50 | 725.18869 |
| 100 | 1,450.37738 |
Checking or converting a tire pressure spec between PSI and bar/kPa, especially for imported vehicles or equipment. HVAC and plumbing work that mixes US and metric pressure specifications. Reading a weather report or scientific instrument that uses a different pressure unit than you're used to. For related conversions, see PSI to Bar Converter and PSI to kPa Converter.
This calculator carries full precision internally and only rounds the final displayed result for readability -- if you need more or fewer decimal places than shown, the underlying value is still exact to the limits of floating-point arithmetic.
Multiply the Bar value by 14.5037738 to get PSI. This calculator does that automatically as you type, so you don't need to do the multiplication by hand.
Yes -- 1 Bar equals 14.5037738 PSI by definition, so the result is mathematically exact rather than a rounded estimate (the displayed value may be rounded for readability, but the underlying calculation isn't).
Yes -- change the "From Unit" dropdown above the input to switch direction. The same conversion engine handles every unit in this category, not just Bar and PSI.
Most passenger car tires run around 30-35 PSI, which is roughly 2.1-2.4 bar or 207-241 kPa -- always use your specific vehicle's manufacturer-recommended pressure (found on the door jamb sticker or owner's manual) rather than a general estimate.
PSI is one of the standard units for measuring pressure -- see the Practical Uses section above for the specific contexts where it's most commonly encountered.
100 bar equals 1,450.37738 psi, using the same 14.5037738 factor as the rest of this page.
To convert bar to psi, multiply by 14.50377. To go the other way, divide by 14.50377 (or multiply psi by 0.06894757). For example, 12.5 bar × 14.50377 = 181.2972 psi, and 3.5 bar × 14.50377 = 50.76321 psi.
One bar equals exactly 100,000 pascals, close to average sea-level atmospheric pressure (1.01325 bar). One psi (pound-force per square inch) equals about 6,894.76 pascals, or roughly 0.0689476 bar.
| Bar | PSI |
|---|---|
| 1 | 14.50377 |
| 2 | 29.00755 |
| 3 | 43.51132 |
| 5 | 72.51887 |
| 10 | 145.0377 |
| 15 | 217.5566 |
| 20 | 290.0755 |
| 25 | 362.5943 |
| 50 | 725.1887 |
| 75 | 1,087.783 |
| 100 | 1,450.377 |
| 250 | 3,625.943 |
| 500 | 7,251.887 |
| 1,000 | 14,503.77 |
How many psi are in 1 bar?
1 bar equals 14.50377 psi.
How many bar are in 1 psi?
1 psi equals 0.06894757 bar.
What is 150 bar in psi?
150 bar equals 2,175.566 psi, using the same 14.50377 factor as the rest of this chart.
Is this conversion exact or approximate?
The 14.50377 factor comes from a fixed, exact definitional constant, so the underlying math is exact; the numbers on this page are rounded to seven significant digits for readability, and the calculator above keeps the full-precision value.
Values are rounded to seven significant digits for display; the converter above uses the full-precision factor.
Reference: NIST Weights and Measures