kPa to Bar Converter
Convert kilopascals to bar — divide by one hundred. Results update as you type; exact factors shown.
One kilopascal is 0.01 bars — see the exact factor, not a rounded rule of thumb.
How the kpa to bar converter works
Pressures convert through the pascal (1 N/m²). One bar is exactly 100 kPa; a standard atmosphere is exactly 101.325 kPa; 1 psi is 6.894757 kPa (a pound-force on a square inch); 1 mmHg is 133.322 Pa by the conventional definition.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
Common pressure conversions
| From | To | Units |
|---|---|---|
| 50 kPa | 0.5 bar | kilopascals to bars |
| 100 kPa | 1 bar | kilopascals to bars |
| 150 kPa | 1.5 bar | kilopascals to bars |
| 200 kPa | 2 bar | kilopascals to bars |
| 220 kPa | 2.2 bar | kilopascals to bars |
| 250 kPa | 2.5 bar | kilopascals to bars |
| 300 kPa | 3 bar | kilopascals to bars |
| 400 kPa | 4 bar | kilopascals to bars |
| 500 kPa | 5 bar | kilopascals to bars |
| 1,000 kPa | 10 bar | kilopascals to bars |
| 10,000 kPa | 100 bar | kilopascals to bars |
| 20,000 kPa | 200 bar | kilopascals to bars |
Units in this converter and their exact factors
| Unit | Symbol | One unit in pascals |
|---|---|---|
| pascal | Pa | 1 pascal |
| kilopascal | kPa | 1,000 pascal |
| megapascal | MPa | 1,000,000 pascal |
| bar | bar | 100,000 pascal |
| millibar (hectopascal) | mbar | 100 pascal |
| standard atmosphere | atm | 101,325 pascal |
| pound per square inch | psi | 6,894.757293168 pascal |
| millimetre of mercury | mmHg | 133.322387415 pascal |
| inch of mercury | inHg | 3,386.389 pascal |
FAQFrequently asked questions about pressure conversion
How many bar in 100 kPa?
Exactly 1.
What is 220 kPa in bar?
2.2 bar — a typical car tyre.
Which is bigger?
A bar, by a hundred times, since a kilopascal is a thousand pascals and a bar is a hundred thousand.
What is atmospheric pressure in kPa?
101.325 kPa, which is 1.01325 bar.
Do scuba tanks use bar?
Yes — a full cylinder is typically 200 or 300 bar, which is 20,000 or 30,000 kPa.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.