quialo.

Pressure Converter

Result
Enter a value to convert.

Convert pressure values between pascal, kilopascal, bar, psi, and atmosphere. Enter a number, pick the units to convert from and to, and the result updates instantly. Every unit is defined by its exact size in pascals, so conversions stay accurate across the whole range.

How to use

  1. Type the pressure value you want to convert into the value field.
  2. Choose the unit you are converting from in the From selector.
  3. Choose the unit you want the answer in using the To selector.
  4. Read the converted result on the right, which updates as you type.
  5. Use Swap to reverse the units, or Copy result to copy the answer.

Examples

  • 1 bar converts to 100 kPa.
  • 1 atmosphere converts to 101325 Pa.
  • 1 bar converts to 14.5038 psi.

FAQs

How many pascals are in one bar?
One bar equals exactly 100000 pascals, which is the same as 100 kilopascals. The bar is a metric unit close to average atmospheric pressure at sea level.
What is the difference between bar and atmosphere?
One standard atmosphere equals 101325 pascals, while one bar equals 100000 pascals. So one atmosphere is about 1.01325 bar, slightly higher than a bar.
How do I convert psi to bar?
One psi equals about 6894.76 pascals, or roughly 0.0689 bar. To go the other way, one bar is about 14.5038 psi. Select psi as the from unit and bar as the to unit to do it here.
Can I convert negative pressure values?
Yes. Negative values are allowed because gauge pressure can read below zero (a vacuum relative to the surroundings). The tool converts them the same way it converts positive values.
How precise are the conversions?
Conversions use exact factors relative to the pascal (bar and atmosphere are exact, and psi uses the international pound-force and inch definitions). Results are shown to six significant figures to stay readable.

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