Convert Millibar to Pascal
1 millibar = 100 pascal (Pa). For example, 10 millibar = 1,000 pascal and 100 millibar = 10,000 pascal. Type any value below to convert millibar to pascal both ways — it runs entirely in your browser.
Quick answer: Millibar to Pascal
1 Millibar = 100 Pascal (mbar → Pa). To convert millibar to pascal, multiply by 100. To convert pascal to millibar, multiply by 0.01. 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 millibar-to-pascal questions.
How to convert Millibar to Pascal
To convert millibar to pascal, multiply the number of millibar by the conversion factor 100, because 1 mbar = 100 Pa. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 Pa = 0.01 mbar, so you divide by 100 (or multiply by 0.01) to turn pascal back into millibar.
Pa = mbar × 100 ·
mbar = Pa × 0.01
- Write down the value you want to convert, in millibar.
- Multiply it by 100.
- The result is the same area/length/quantity expressed in pascal.
Millibar to Pascal — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 millibar is 500 pascal because 5 mbar × 100 = 500 Pa.
| Millibar | Calculation | Pascal |
|---|---|---|
| 1 mbar | 1 mbar × 100 = 100 Pa | 100 Pa |
| 2 mbar | 2 mbar × 100 = 200 Pa | 200 Pa |
| 3 mbar | 3 mbar × 100 = 300 Pa | 300 Pa |
| 5 mbar | 5 mbar × 100 = 500 Pa | 500 Pa |
| 7 mbar | 7 mbar × 100 = 700 Pa | 700 Pa |
| 10 mbar | 10 mbar × 100 = 1,000 Pa | 1,000 Pa |
| 12 mbar | 12 mbar × 100 = 1,200 Pa | 1,200 Pa |
| 15 mbar | 15 mbar × 100 = 1,500 Pa | 1,500 Pa |
| 20 mbar | 20 mbar × 100 = 2,000 Pa | 2,000 Pa |
| 25 mbar | 25 mbar × 100 = 2,500 Pa | 2,500 Pa |
| 50 mbar | 50 mbar × 100 = 5,000 Pa | 5,000 Pa |
| 100 mbar | 100 mbar × 100 = 10,000 Pa | 10,000 Pa |
Common Millibar to Pascal conversions
These are the millibar-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 millibar = 100 pascal
- 2 millibar = 200 pascal
- 2.5 millibar = 250 pascal
- 3 millibar = 300 pascal
- 4 millibar = 400 pascal
- 5 millibar = 500 pascal
- 6 millibar = 600 pascal
- 7 millibar = 700 pascal
- 8 millibar = 800 pascal
- 9 millibar = 900 pascal
- 10 millibar = 1,000 pascal
- 12 millibar = 1,200 pascal
- 15 millibar = 1,500 pascal
- 20 millibar = 2,000 pascal
- 25 millibar = 2,500 pascal
- 30 millibar = 3,000 pascal
- 50 millibar = 5,000 pascal
- 75 millibar = 7,500 pascal
- 100 millibar = 10,000 pascal
- 200 millibar = 20,000 pascal
- 500 millibar = 50,000 pascal
- 1000 millibar = 100,000 pascal
Millibar to Pascal conversion chart (both directions)
The chart below converts millibar to pascal and pascal to millibar side by side, so it works whichever way you need. 1 millibar = 100 pascal, and 1 pascal = 0.01 millibar.
| Millibar → Pascal | Pascal → Millibar |
|---|---|
| 0.25 mbar = 25 Pa | 0.25 Pa = 0.0025 mbar |
| 0.5 mbar = 50 Pa | 0.5 Pa = 0.005 mbar |
| 1 mbar = 100 Pa | 1 Pa = 0.01 mbar |
| 2 mbar = 200 Pa | 2 Pa = 0.02 mbar |
| 3 mbar = 300 Pa | 3 Pa = 0.03 mbar |
| 4 mbar = 400 Pa | 4 Pa = 0.04 mbar |
| 5 mbar = 500 Pa | 5 Pa = 0.05 mbar |
| 6 mbar = 600 Pa | 6 Pa = 0.06 mbar |
| 7 mbar = 700 Pa | 7 Pa = 0.07 mbar |
| 8 mbar = 800 Pa | 8 Pa = 0.08 mbar |
| 9 mbar = 900 Pa | 9 Pa = 0.09 mbar |
| 10 mbar = 1,000 Pa | 10 Pa = 0.1 mbar |
| 12 mbar = 1,200 Pa | 12 Pa = 0.12 mbar |
| 15 mbar = 1,500 Pa | 15 Pa = 0.15 mbar |
| 20 mbar = 2,000 Pa | 20 Pa = 0.2 mbar |
| 25 mbar = 2,500 Pa | 25 Pa = 0.25 mbar |
| 30 mbar = 3,000 Pa | 30 Pa = 0.3 mbar |
| 40 mbar = 4,000 Pa | 40 Pa = 0.4 mbar |
| 50 mbar = 5,000 Pa | 50 Pa = 0.5 mbar |
| 75 mbar = 7,500 Pa | 75 Pa = 0.75 mbar |
| 100 mbar = 10,000 Pa | 100 Pa = 1 mbar |
| 150 mbar = 15,000 Pa | 150 Pa = 1.5 mbar |
| 200 mbar = 20,000 Pa | 200 Pa = 2 mbar |
| 250 mbar = 25,000 Pa | 250 Pa = 2.5 mbar |
| 500 mbar = 50,000 Pa | 500 Pa = 5 mbar |
| 1000 mbar = 100,000 Pa | 1000 Pa = 10 mbar |
Millibar vs Pascal: which is bigger?
A millibar is the larger unit: one millibar equals 100 pascals. Put another way, you need 100 pascals to make a single millibar.
What is a Millibar? History, origin and usage
The bar and its millibar subdivision were proposed by the Norwegian meteorologist Vilhelm Bjerknes in the early twentieth century, as part of the same push that gave us modern weather fronts. He wanted a pressure unit sized to the atmosphere itself rather than to a mercury column, and the millibar was adopted internationally for weather work in 1929.
Millibars are still used for atmospheric pressure, especially in older records, in shipping and in some national forecasts. They also appear on vacuum equipment and altimeter settings. Because a millibar and a hectopascal are the same size, the two are freely interchangeable.
A millibar is one thousandth of a bar, or 100 pascals. The lowest sea-level pressure ever measured in a tropical cyclone was 870 mbar, in Typhoon Tip in 1979 — a reading that would be written identically as 870 hPa.
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 Millibar to other units
It can help to see a millibar next to the other units it is commonly compared with. One millibar (mbar) is equal to:
| 1 Millibar equals | Unit |
|---|---|
| 100 Pa | Pascal |
| 1 hPa | Hectopascal |
| 0.1 kPa | Kilopascal |
| 0.0001 MPa | Megapascal |
| 0.001 bar | Bar |
| 0.0009869233 atm | Standard atmosphere |
| 0.7500617 Torr | Torr |
| 0.7500616 mmHg | Millimetre of mercury |
| 0.02952998 inHg | Inch of mercury |
| 10.19716 mmH₂O | Millimetre of water |
| 0.4014631 inH₂O | Inch of water |
| 0.01450377 psi | Pound per square inch |
| 0.001019716 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 Millibar to Pascal
- To go from millibar to pascal, multiply by 100; to go back, divide by 100 (or multiply by 0.01).
- For a quick mental estimate, remember that 1 millibar ≈ 100 pascal, so 10 millibar ≈ 1,000 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 Millibar to Pascal converter
Type a number into the Millibar 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 millibar). 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 mbar = 100 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 millibar-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 millibar?
- 1 millibar = 100 pascal (Pa). To convert any number of millibar to pascal, multiply by 100.
- How do I convert millibar to pascal?
- Multiply the number of millibar by 100. For example, 10 millibar = 10 × 100 = 1,000 pascal, and 25 millibar = 2,500 pascal.
- How many millibar are in 1 pascal?
- 1 pascal = 0.01 millibar. So to convert pascal back to millibar, multiply by 0.01.
- What is the formula to convert millibar to pascal?
- pascal = millibar × 100. The reverse formula is millibar = pascal × 0.01.
- How much is 100 millibar in pascal?
- 100 millibar = 10,000 pascal. (And 1000 millibar = 100,000 pascal.)
- Which is bigger, a millibar or a pascal?
- A millibar is larger: 1 millibar = 100 pascal.
- Is this millibar to pascal converter accurate?
- Yes — every value is computed from the exact 100 Pa per mbar factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert pascal to millibar too?
- Yes. The converter works both ways — enter a value in either field. 1 pascal = 0.01 millibar.