Convert Bar to Pascal
1 bar = 100,000 pascal (Pa). For example, 10 bar = 1,000,000 pascal and 100 bar = 10,000,000 pascal. Type any value below to convert bar to pascal both ways — it runs entirely in your browser.
Quick answer: Bar to Pascal
1 Bar = 100,000 Pascal (bar → Pa). To convert bar to pascal, multiply by 100,000. To convert pascal to bar, multiply by 0.00001. 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 bar-to-pascal questions.
How to convert Bar to Pascal
To convert bar to pascal, multiply the number of bar by the conversion factor 100,000, because 1 bar = 100,000 Pa. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 Pa = 0.00001 bar, so you divide by 100,000 (or multiply by 0.00001) to turn pascal back into bar.
Pa = bar × 100,000 ·
bar = Pa × 0.00001
- Write down the value you want to convert, in bar.
- Multiply it by 100,000.
- The result is the same area/length/quantity expressed in pascal.
Bar to Pascal — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 bar is 500,000 pascal because 5 bar × 100,000 = 500,000 Pa.
| Bar | Calculation | Pascal |
|---|---|---|
| 1 bar | 1 bar × 100,000 = 100,000 Pa | 100,000 Pa |
| 2 bar | 2 bar × 100,000 = 200,000 Pa | 200,000 Pa |
| 3 bar | 3 bar × 100,000 = 300,000 Pa | 300,000 Pa |
| 5 bar | 5 bar × 100,000 = 500,000 Pa | 500,000 Pa |
| 7 bar | 7 bar × 100,000 = 700,000 Pa | 700,000 Pa |
| 10 bar | 10 bar × 100,000 = 1,000,000 Pa | 1,000,000 Pa |
| 12 bar | 12 bar × 100,000 = 1,200,000 Pa | 1,200,000 Pa |
| 15 bar | 15 bar × 100,000 = 1,500,000 Pa | 1,500,000 Pa |
| 20 bar | 20 bar × 100,000 = 2,000,000 Pa | 2,000,000 Pa |
| 25 bar | 25 bar × 100,000 = 2,500,000 Pa | 2,500,000 Pa |
| 50 bar | 50 bar × 100,000 = 5,000,000 Pa | 5,000,000 Pa |
| 100 bar | 100 bar × 100,000 = 10,000,000 Pa | 10,000,000 Pa |
Common Bar to Pascal conversions
These are the bar-to-pascal values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 bar = 100,000 pascal
- 2 bar = 200,000 pascal
- 2.5 bar = 250,000 pascal
- 3 bar = 300,000 pascal
- 4 bar = 400,000 pascal
- 5 bar = 500,000 pascal
- 6 bar = 600,000 pascal
- 7 bar = 700,000 pascal
- 8 bar = 800,000 pascal
- 9 bar = 900,000 pascal
- 10 bar = 1,000,000 pascal
- 12 bar = 1,200,000 pascal
- 15 bar = 1,500,000 pascal
- 20 bar = 2,000,000 pascal
- 25 bar = 2,500,000 pascal
- 30 bar = 3,000,000 pascal
- 50 bar = 5,000,000 pascal
- 75 bar = 7,500,000 pascal
- 100 bar = 10,000,000 pascal
- 200 bar = 20,000,000 pascal
- 500 bar = 50,000,000 pascal
- 1000 bar = 100,000,000 pascal
Bar to Pascal conversion chart (both directions)
The chart below converts bar to pascal and pascal to bar side by side, so it works whichever way you need. 1 bar = 100,000 pascal, and 1 pascal = 0.00001 bar.
| Bar → Pascal | Pascal → Bar |
|---|---|
| 0.25 bar = 25,000 Pa | 0.25 Pa = 0.0000025 bar |
| 0.5 bar = 50,000 Pa | 0.5 Pa = 0.000005 bar |
| 1 bar = 100,000 Pa | 1 Pa = 0.00001 bar |
| 2 bar = 200,000 Pa | 2 Pa = 0.00002 bar |
| 3 bar = 300,000 Pa | 3 Pa = 0.00003 bar |
| 4 bar = 400,000 Pa | 4 Pa = 0.00004 bar |
| 5 bar = 500,000 Pa | 5 Pa = 0.00005 bar |
| 6 bar = 600,000 Pa | 6 Pa = 0.00006 bar |
| 7 bar = 700,000 Pa | 7 Pa = 0.00007 bar |
| 8 bar = 800,000 Pa | 8 Pa = 0.00008 bar |
| 9 bar = 900,000 Pa | 9 Pa = 0.00009 bar |
| 10 bar = 1,000,000 Pa | 10 Pa = 0.0001 bar |
| 12 bar = 1,200,000 Pa | 12 Pa = 0.00012 bar |
| 15 bar = 1,500,000 Pa | 15 Pa = 0.00015 bar |
| 20 bar = 2,000,000 Pa | 20 Pa = 0.0002 bar |
| 25 bar = 2,500,000 Pa | 25 Pa = 0.00025 bar |
| 30 bar = 3,000,000 Pa | 30 Pa = 0.0003 bar |
| 40 bar = 4,000,000 Pa | 40 Pa = 0.0004 bar |
| 50 bar = 5,000,000 Pa | 50 Pa = 0.0005 bar |
| 75 bar = 7,500,000 Pa | 75 Pa = 0.00075 bar |
| 100 bar = 10,000,000 Pa | 100 Pa = 0.001 bar |
| 150 bar = 15,000,000 Pa | 150 Pa = 0.0015 bar |
| 200 bar = 20,000,000 Pa | 200 Pa = 0.002 bar |
| 250 bar = 25,000,000 Pa | 250 Pa = 0.0025 bar |
| 500 bar = 50,000,000 Pa | 500 Pa = 0.005 bar |
| 1000 bar = 100,000,000 Pa | 1000 Pa = 0.01 bar |
Bar vs Pascal: which is bigger?
A bar is the larger unit: one bar equals 100,000 pascals. Put another way, you need 100,000 pascals to make a single bar.
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.
What is a Pascal? History, origin and usage
The pascal is named after Blaise Pascal, who in 1648 had his brother-in-law carry a mercury barometer up the Puy de Dôme in central France and watch the mercury column fall as he climbed. That experiment showed air has weight and that the pressure it exerts drops with height. The unit itself is much younger: the name was adopted by the General Conference on Weights and Measures in 1971, replacing the older habit of writing pressures as "newtons per square metre".
The pascal is the SI unit of pressure and the base every other unit on this page is defined against. On its own it is awkwardly small for daily life — a sheet of paper resting on a table presses down with only a few pascals — so real-world figures are almost always given with a prefix: hectopascals for weather, kilopascals for tyres and gas, megapascals for concrete and hydraulics.
One pascal is one newton spread over one square metre, which is about the pressure of a five-rupee coin lying flat on a table. Because pressure is force divided by area, the same push concentrated into a smaller area gives a much higher pressure — which is why a drawing pin goes into a wall and your thumb does not.
Convert 1 Bar to other units
It can help to see a bar next to the other units it is commonly compared with. 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 |
Convert 1 Pascal to other units
One pascal (Pa) is equal to:
| 1 Pascal equals | Unit |
|---|---|
| 0.01 hPa | Hectopascal |
| 0.001 kPa | Kilopascal |
| 0.000001 MPa | Megapascal |
| 0.01 mbar | Millibar |
| 0.00001 bar | Bar |
| 0.000009869233 atm | Standard atmosphere |
| 0.007500617 Torr | Torr |
| 0.007500616 mmHg | Millimetre of mercury |
| 0.0002952998 inHg | Inch of mercury |
| 0.1019716 mmH₂O | Millimetre of water |
| 0.004014631 inH₂O | Inch of water |
| 0.0001450377 psi | Pound per square inch |
| 0.00001019716 kgf/cm² | Kilogram-force per square centimetre |
Tips for converting Bar to Pascal
- To go from bar to pascal, multiply by 100,000; to go back, divide by 100,000 (or multiply by 0.00001).
- For a quick mental estimate, remember that 1 bar ≈ 100,000 pascal, so 10 bar ≈ 1,000,000 pascal.
- 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 Bar to Pascal converter
Type a number into the Bar field and the equivalent in Pascal 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 Pascal field to convert the other way (pascal to bar). 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 bar = 100,000 Pa), 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 bar-to-pascal 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 pascal are in 1 bar?
- 1 bar = 100,000 pascal (Pa). To convert any number of bar to pascal, multiply by 100,000.
- How do I convert bar to pascal?
- Multiply the number of bar by 100,000. For example, 10 bar = 10 × 100,000 = 1,000,000 pascal, and 25 bar = 2,500,000 pascal.
- How many bar are in 1 pascal?
- 1 pascal = 0.00001 bar. So to convert pascal back to bar, multiply by 0.00001.
- What is the formula to convert bar to pascal?
- pascal = bar × 100,000. The reverse formula is bar = pascal × 0.00001.
- How much is 100 bar in pascal?
- 100 bar = 10,000,000 pascal. (And 1000 bar = 100,000,000 pascal.)
- Which is bigger, a bar or a pascal?
- A bar is larger: 1 bar = 100,000 pascal.
- Is this bar to pascal converter accurate?
- Yes — every value is computed from the exact 100,000 Pa per bar factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert pascal to bar too?
- Yes. The converter works both ways — enter a value in either field. 1 pascal = 0.00001 bar.