Convert Kilopascal to Bar
1 kilopascal = 0.01 bar (bar). For example, 10 kilopascal = 0.1 bar and 100 kilopascal = 1 bar. Type any value below to convert kilopascal to bar both ways — it runs entirely in your browser.
Quick answer: Kilopascal to Bar
1 Kilopascal = 0.01 Bar (kPa → bar). To convert kilopascal to bar, multiply by 0.01. To convert bar to kilopascal, multiply by 100. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common kilopascal-to-bar questions.
How to convert Kilopascal to Bar
To convert kilopascal to bar, multiply the number of kilopascal by the conversion factor 0.01, because 1 kPa = 0.01 bar. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 bar = 100 kPa, so you divide by 0.01 (or multiply by 100) to turn bar back into kilopascal.
bar = kPa × 0.01 ·
kPa = bar × 100
- Write down the value you want to convert, in kilopascal.
- Multiply it by 0.01.
- The result is the same area/length/quantity expressed in bar.
Kilopascal to Bar — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 kilopascal is 0.05 bar because 5 kPa × 0.01 = 0.05 bar.
| Kilopascal | Calculation | Bar |
|---|---|---|
| 1 kPa | 1 kPa × 0.01 = 0.01 bar | 0.01 bar |
| 2 kPa | 2 kPa × 0.01 = 0.02 bar | 0.02 bar |
| 3 kPa | 3 kPa × 0.01 = 0.03 bar | 0.03 bar |
| 5 kPa | 5 kPa × 0.01 = 0.05 bar | 0.05 bar |
| 7 kPa | 7 kPa × 0.01 = 0.07 bar | 0.07 bar |
| 10 kPa | 10 kPa × 0.01 = 0.1 bar | 0.1 bar |
| 12 kPa | 12 kPa × 0.01 = 0.12 bar | 0.12 bar |
| 15 kPa | 15 kPa × 0.01 = 0.15 bar | 0.15 bar |
| 20 kPa | 20 kPa × 0.01 = 0.2 bar | 0.2 bar |
| 25 kPa | 25 kPa × 0.01 = 0.25 bar | 0.25 bar |
| 50 kPa | 50 kPa × 0.01 = 0.5 bar | 0.5 bar |
| 100 kPa | 100 kPa × 0.01 = 1 bar | 1 bar |
Common Kilopascal to Bar conversions
These are the kilopascal-to-bar values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 kilopascal = 0.01 bar
- 2 kilopascal = 0.02 bar
- 2.5 kilopascal = 0.025 bar
- 3 kilopascal = 0.03 bar
- 4 kilopascal = 0.04 bar
- 5 kilopascal = 0.05 bar
- 6 kilopascal = 0.06 bar
- 7 kilopascal = 0.07 bar
- 8 kilopascal = 0.08 bar
- 9 kilopascal = 0.09 bar
- 10 kilopascal = 0.1 bar
- 12 kilopascal = 0.12 bar
- 15 kilopascal = 0.15 bar
- 20 kilopascal = 0.2 bar
- 25 kilopascal = 0.25 bar
- 30 kilopascal = 0.3 bar
- 50 kilopascal = 0.5 bar
- 75 kilopascal = 0.75 bar
- 100 kilopascal = 1 bar
- 200 kilopascal = 2 bar
- 500 kilopascal = 5 bar
- 1000 kilopascal = 10 bar
Kilopascal to Bar conversion chart (both directions)
The chart below converts kilopascal to bar and bar to kilopascal side by side, so it works whichever way you need. 1 kilopascal = 0.01 bar, and 1 bar = 100 kilopascal.
| Kilopascal → Bar | Bar → Kilopascal |
|---|---|
| 0.25 kPa = 0.0025 bar | 0.25 bar = 25 kPa |
| 0.5 kPa = 0.005 bar | 0.5 bar = 50 kPa |
| 1 kPa = 0.01 bar | 1 bar = 100 kPa |
| 2 kPa = 0.02 bar | 2 bar = 200 kPa |
| 3 kPa = 0.03 bar | 3 bar = 300 kPa |
| 4 kPa = 0.04 bar | 4 bar = 400 kPa |
| 5 kPa = 0.05 bar | 5 bar = 500 kPa |
| 6 kPa = 0.06 bar | 6 bar = 600 kPa |
| 7 kPa = 0.07 bar | 7 bar = 700 kPa |
| 8 kPa = 0.08 bar | 8 bar = 800 kPa |
| 9 kPa = 0.09 bar | 9 bar = 900 kPa |
| 10 kPa = 0.1 bar | 10 bar = 1,000 kPa |
| 12 kPa = 0.12 bar | 12 bar = 1,200 kPa |
| 15 kPa = 0.15 bar | 15 bar = 1,500 kPa |
| 20 kPa = 0.2 bar | 20 bar = 2,000 kPa |
| 25 kPa = 0.25 bar | 25 bar = 2,500 kPa |
| 30 kPa = 0.3 bar | 30 bar = 3,000 kPa |
| 40 kPa = 0.4 bar | 40 bar = 4,000 kPa |
| 50 kPa = 0.5 bar | 50 bar = 5,000 kPa |
| 75 kPa = 0.75 bar | 75 bar = 7,500 kPa |
| 100 kPa = 1 bar | 100 bar = 10,000 kPa |
| 150 kPa = 1.5 bar | 150 bar = 15,000 kPa |
| 200 kPa = 2 bar | 200 bar = 20,000 kPa |
| 250 kPa = 2.5 bar | 250 bar = 25,000 kPa |
| 500 kPa = 5 bar | 500 bar = 50,000 kPa |
| 1000 kPa = 10 bar | 1000 bar = 100,000 kPa |
Kilopascal vs Bar: which is bigger?
A bar is the larger unit: one bar equals 100 kilopascals. Put another way, you need 100 kilopascals to make a single bar.
What is a Kilopascal? History, origin and usage
The kilopascal came into general use as countries converted their engineering standards to SI through the 1970s and 1980s. Canada, Australia and much of Europe moved tyre-pressure labels and gas-cylinder markings to kPa in that period, which is why a car built for one market often carries a door sticker in kPa and one built for another carries the same number in psi or bar.
Kilopascals are the workaday metric pressure unit: tyre pressures, medical gas supplies, water systems, ventilation and most mechanical engineering specifications. A car tyre is typically inflated to somewhere around 200 to 250 kPa.
One kilopascal is 1,000 pascals, and 100 kilopascals is very nearly one atmosphere — which is a useful mental shortcut, though the exact figure is 101.325 kPa, not 100.
What is a Bar? History, origin and usage
The bar takes its name from the Greek báros, meaning weight. It was deliberately defined as exactly 100,000 pascals, a round number chosen to sit very close to average air pressure at sea level, so that a pressure "in bars" reads roughly as "how many atmospheres". It is not an SI unit, but the International Bureau of Weights and Measures lists it among the units accepted for use alongside SI.
Bars are the everyday pressure unit across most of Europe and much of Asia: tyre inflators, bicycle pumps, espresso machines, diving cylinders, pressure washers and boiler gauges. An espresso machine is conventionally built around 9 bar of brewing pressure.
A bar is close to, but not the same as, an atmosphere — one atmosphere is 1.01325 bar exactly, a difference of about 1.3%. Diving uses this closeness deliberately: seawater adds roughly one bar of pressure for every ten metres of depth.
Convert 1 Kilopascal to other units
It can help to see a kilopascal next to the other units it is commonly compared with. One kilopascal (kPa) is equal to:
| 1 Kilopascal equals | Unit |
|---|---|
| 1,000 Pa | Pascal |
| 10 hPa | Hectopascal |
| 0.001 MPa | Megapascal |
| 10 mbar | Millibar |
| 0.01 bar | Bar |
| 0.009869233 atm | Standard atmosphere |
| 7.500617 Torr | Torr |
| 7.500616 mmHg | Millimetre of mercury |
| 0.2952998 inHg | Inch of mercury |
| 101.9716 mmH₂O | Millimetre of water |
| 4.014631 inH₂O | Inch of water |
| 0.1450377 psi | Pound per square inch |
| 0.01019716 kgf/cm² | Kilogram-force per square centimetre |
Convert 1 Bar to other units
One bar (bar) is equal to:
| 1 Bar equals | Unit |
|---|---|
| 100,000 Pa | Pascal |
| 1,000 hPa | Hectopascal |
| 100 kPa | Kilopascal |
| 0.1 MPa | Megapascal |
| 1,000 mbar | Millibar |
| 0.9869233 atm | Standard atmosphere |
| 750.0617 Torr | Torr |
| 750.0616 mmHg | Millimetre of mercury |
| 29.52998 inHg | Inch of mercury |
| 10,197.16 mmH₂O | Millimetre of water |
| 401.4631 inH₂O | Inch of water |
| 14.50377 psi | Pound per square inch |
| 1.019716 kgf/cm² | Kilogram-force per square centimetre |
Tips for converting Kilopascal to Bar
- To go from kilopascal to bar, multiply by 0.01; to go back, divide by 0.01 (or multiply by 100).
- For a quick mental estimate, remember that 1 kilopascal ≈ 0.01 bar, so 10 kilopascal ≈ 0.1 bar.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Kilopascal to Bar converter
Type a number into the Kilopascal field and the equivalent in Bar appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Bar field to convert the other way (bar to kilopascal). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 kPa = 0.01 bar), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for kilopascal-to-bar conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
Pressure factors here come from fixed definitions, anchored to the pascal: a bar is exactly 100,000 Pa, one atmosphere is exactly 101,325 Pa, a torr is exactly a 760th of an atmosphere, and psi is built from the exact pound and the exact inch. Two of them — psi and the torr — work out to decimals that repeat forever, so where a number is shown rounded it is marked, not quietly trimmed.
Frequently asked questions
- How many bar are in 1 kilopascal?
- 1 kilopascal = 0.01 bar (bar). To convert any number of kilopascal to bar, multiply by 0.01.
- How do I convert kilopascal to bar?
- Multiply the number of kilopascal by 0.01. For example, 10 kilopascal = 10 × 0.01 = 0.1 bar, and 25 kilopascal = 0.25 bar.
- How many kilopascal are in 1 bar?
- 1 bar = 100 kilopascal. So to convert bar back to kilopascal, multiply by 100.
- What is the formula to convert kilopascal to bar?
- bar = kilopascal × 0.01. The reverse formula is kilopascal = bar × 100.
- How much is 100 kilopascal in bar?
- 100 kilopascal = 1 bar. (And 1000 kilopascal = 10 bar.)
- Which is bigger, a kilopascal or a bar?
- A bar is larger: 1 bar = 100 kilopascal.
- Is this kilopascal to bar converter accurate?
- Yes — every value is computed from the exact 0.01 bar per kPa factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert bar to kilopascal too?
- Yes. The converter works both ways — enter a value in either field. 1 bar = 100 kilopascal.