Converters

Pressure Converter

Convert pressure accurately between pascals, kilopascals, megapascals, bar, millibar, psi, standard atmosphere and Torr.

Example: a pressure of 250 kilopascals. How many psi is that?

Pressure

From To

Result 36.259434 psi 250 kPa = 36.259434 psi

One-unit equivalent 1 kPa = 0.145038 psi A quick way to understand the relationship between the two units.

✓ Conversion factors match data and definitions from the National Institute of Standards and Technology (NIST)

How is the conversion calculated?

The value is converted to pascals first, then to the requested pressure unit using precise conversion relationships.

This calculation runs in your browser. Your values are not sent to our server.

How it works

Enter the pressure value, then choose the current unit and the unit you want to convert to.
Example: 250 kilopascals is approximately 36.259434 psi.
Use the swap button to reverse the units without re-entering the value.
The converter uses the pascal as its internal reference and keeps bar, standard atmosphere and Torr distinct.
Whole numbers and decimals are supported, with display rounding only when needed while internal precision is preserved.

How many pascals are in 1 bar?

1 bar equals exactly 100,000 pascals.

How many kilopascals are in one standard atmosphere?

1 standard atmosphere equals exactly 101.325 kilopascals.

How many psi are in 1 bar?

1 bar is approximately 14.503774 psi.

How many kilopascals are in 1 psi?

1 psi is approximately 6.894757293 kilopascals.

Is Torr the same as an atmosphere?

No. 760 Torr equals one standard atmosphere, so each Torr is only a small fraction of an atmosphere.