Tire Pressure Converter
Convert tire pressure between PSI, BAR and kPa.
About Tire Pressure Converter
PSI, BAR and kPa are three pressure scales that convert through fixed factors, most simply remembered as one BAR equaling about 14.5 PSI or 100 kPa. Car door stickers in different countries state pressure in different units, and over- or under-inflating both hurts tire life and fuel economy.
Formula
Tire Pressure
1 bar = 14.504 PSI = 100 kPa
- kPa
- Kilopascals, the metric pressure unit
Worked example
With the default values below, Tire Pressure Converter returns PSI of 32.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Pressure valueminimum 0
- 32
- Input unitone of PSI, BAR, kPa
- PSI
Results
- PSI
- 32.00
- BAR
- 2.21
- kPa
- 220.6
Step by step
- 1Values used
- 2Tire Pressure
- 3PSI= 32.00
- 4BAR= 2.21
- 5kPa= 220.6
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Tire Pressure calculated?
1 bar = 14.504 PSI = 100 kPa PSI, BAR and kPa are three pressure scales that convert through fixed factors, most simply remembered as one BAR equaling about 14.5 PSI or 100 kPa.
Why does Tire Pressure matter?
Car door stickers in different countries state pressure in different units, and over- or under-inflating both hurts tire life and fuel economy.
What values do I need to enter?
This calculator takes 2 inputs: Pressure value, Input unit. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.