How to Convert Kilopascals to Bar (kPa to bar)
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars. This guide shows how to convert kilopascals into bar by hand, with examples and a quick-reference table.
The conversion
To convert kilopascals to bar, multiply the value by 0.01. To go the other way, divide by the same number (or multiply by 100). For a quick estimate, multiply by about 0.01.
Bar = kilopascals × 0.01
Worked examples
- 3 kPa = 0.03 bar
- 12.5 kPa = 0.125 bar
- 75 kPa = 0.75 bar
Kilopascals to Bar table
| Kilopascals | Bar |
|---|---|
| 1 kPa | 0.01 bar |
| 2 kPa | 0.02 bar |
| 5 kPa | 0.05 bar |
| 10 kPa | 0.1 bar |
| 20 kPa | 0.2 bar |
| 25 kPa | 0.25 bar |
| 50 kPa | 0.5 bar |
| 100 kPa | 1 bar |
| 250 kPa | 2.5 bar |
| 500 kPa | 5 bar |
| 1,000 kPa | 10 bar |
Common questions
Is kPa to bar exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Bar to Kilopascals converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Background
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Kilopascals to Bar Converter or browse all pressure converters.
Run your own numbers: Kilopascals to Bar Converter