How to Convert Kilopascals to Millibars (kPa to mbar)
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 millibars by hand, with examples and a quick-reference table.
The conversion
To convert kilopascals to millibars, multiply the value by 10. To go the other way, divide by the same number (or multiply by 0.1). For a quick estimate, multiply by about 10.
Millibars = kilopascals × 10
Worked examples
- 3 kPa = 30 mbar
- 12.5 kPa = 125 mbar
- 75 kPa = 750 mbar
Kilopascals to Millibars table
| Kilopascals | Millibars |
|---|---|
| 1 kPa | 10 mbar |
| 2 kPa | 20 mbar |
| 5 kPa | 50 mbar |
| 10 kPa | 100 mbar |
| 20 kPa | 200 mbar |
| 25 kPa | 250 mbar |
| 50 kPa | 500 mbar |
| 100 kPa | 1,000 mbar |
| 250 kPa | 2,500 mbar |
| 500 kPa | 5,000 mbar |
| 1,000 kPa | 10,000 mbar |
Common questions
Is kPa to mbar 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 Millibars to Kilopascals converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
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.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
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 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.
For any value, use the Kilopascals to Millibars Converter or browse all pressure converters.
Run your own numbers: Kilopascals to Millibars Converter