How to Convert Bar to Kilopascals (bar to kPa)
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 bar into kilopascals by hand, with examples and a quick-reference table.
The conversion
To convert bar to kilopascals, multiply the value by 100. To go the other way, divide by the same number (or multiply by 0.01). For a quick estimate, multiply by about 100.
Kilopascals = bar × 100
Worked examples
- 3 bar = 300 kPa
- 12.5 bar = 1,250 kPa
- 75 bar = 7,500 kPa
Bar to Kilopascals table
| Bar | Kilopascals |
|---|---|
| 1 bar | 100 kPa |
| 2 bar | 200 kPa |
| 5 bar | 500 kPa |
| 10 bar | 1,000 kPa |
| 20 bar | 2,000 kPa |
| 25 bar | 2,500 kPa |
| 50 bar | 5,000 kPa |
| 100 bar | 10,000 kPa |
| 250 bar | 25,000 kPa |
| 500 bar | 50,000 kPa |
| 1,000 bar | 100,000 kPa |
Common questions
Is bar to kPa 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 Kilopascals to Bar 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.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Background
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.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For any value, use the Bar to Kilopascals Converter or browse all pressure converters.
Run your own numbers: Bar to Kilopascals Converter