Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Bar to Kilopascals
Convert bar to kPa instantly, then review the formula, assumptions, and rounding guidance.
Pressure & stressInstant result
Decimals
Formula result = input × 100000 ÷ 1000. 1 bar = 100 kPa
Common examples
One value, several units
Pascals100,000 Pa
Kilopascals100 kPa
Megapascals0.1 MPa
Atmospheres0.9869 atm
Pounds per square inch14.5038 psi
Millimetres of mercury750.0616 mmHg
Conversion table
| bar | kPa |
|---|---|
| 1 bar | 100 kPa |
| 2 bar | 200 kPa |
| 5 bar | 500 kPa |
| 10 bar | 1,000 kPa |
| 25 bar | 2,500 kPa |
| 50 bar | 5,000 kPa |
| 100 bar | 10,000 kPa |
Conversion chart
1 bar100 kPa
5 bar500 kPa
10 bar1,000 kPa
25 bar2,500 kPa
50 bar5,000 kPa
Worked example
Standard atmosphere is 101,325 pascals.
Unit definition
Bar (bar) One bar equals 100,000 pascal.
Unit history
Bar is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert bar to pascal.
3. Convert the base value to kPa and apply your display precision.
Understand the result before using it
Bar to Kilopascals converts a value measured in Bar (bar) into the equivalent value in Kilopascals (kPa). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 100000 ÷ 1000
Assumptions
- Bar and Kilopascals represent the same pressure & stress quantity.
- The input is expressed in bar; the output is expressed in kPa.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 bar = 100 kPa. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a bar measurement in a document that expects kPa.
- Compare a bar value with a value reported in kilopascals.
- Check the bar-to-kPa arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse bar with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Bar to Kilopascals?
result = input × 100000 ÷ 1000 Using the displayed relationship, 1 bar equals 100 kPa.
How many Kilopascals are in one Bar?
One Bar is 100 Kilopascals. The displayed digits may be rounded.
Can I reverse the bar to kPa conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts kPa back to bar.
Is the Bar to Kilopascals result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.