Bar to PSI Conversion Calculator
This calculator converts pressure values between bar and PSI (pounds per square inch), the two units most commonly quoted for tyre pressures, hydraulic systems, gas cylinders and compressed air equipment. Enter a pressure in bar and the tool instantly converts it to PSI, or enter a value in PSI and it converts back to bar, using the exact factor of 1 bar = 14.503773773 PSI. You can also choose a preset from the common pressures dropdown, covering typical car, SUV and bicycle tyre settings, standard atmosphere, and high-pressure gas cylinders, which fills the bar field automatically. Alongside the headline bar-to-PSI and PSI-to-bar results, you get the equivalent pressure in kilopascals, pascals, atmospheres, millibars and Torr, plus a full calculation breakdown showing the exact multiplication used. A decimal places selector lets you round the output to suit your needs, from two decimal places for everyday tyre checks to six for more precise engineering work. A reference table below the calculator lists common bar values with their PSI and kPa equivalents and typical uses, so you can quickly check a figure without typing it in. Because New Zealand tyre placards and most equipment specifications use bar while some gauges and imported parts are marked in PSI, this tool helps you set tyres or equipment to the correct pressure. Figures are indicative; for safety-critical engineering applications, always confirm against the relevant standard.
Bar to PSI
PSI to Bar (reverse)
Conversion Breakdown
Also In Other Units
Common Bar to PSI Reference Values
| Bar | PSI | kPa | Common Use |
|---|---|---|---|
| 0.5 | 7.25 | 50 | Low pressure / partial vacuum |
| 1.0 | 14.50 | 100 | Reference pressure |
| 1.013 | 14.69 | 101.3 | 1 standard atmosphere (sea level) |
| 2.0 | 29.01 | 200 | Car tyre (lower end) |
| 2.2 | 31.91 | 220 | Typical passenger car tyre |
| 2.5 | 36.26 | 250 | Car tyre (upper end) |
| 2.8 | 40.61 | 280 | SUV / van tyre |
| 3.0 | 43.51 | 300 | Light truck / commercial vehicle tyre |
| 5.0 | 72.52 | 500 | Hydraulic systems (low pressure) |
| 8.0 | 116.03 | 800 | Road bicycle tyre |
| 10 | 145.04 | 1,000 | Compressed air lines |
| 200 | 2,900.75 | 20,000 | High-pressure gas cylinder |