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.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
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 Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.