mmHg to Bar Converter
Quick answer: To convert mmHg to bar, multiply by 0.001333224. For example, 10 mmHg is 0.01333224 bar. One millimeter of mercury equals 0.001333224 bar.
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Use the mmHg to Bar Converter
mmHg to Bar formula and what each symbol means
bar = mmHg × 0.001333224
| Symbol | Meaning |
|---|---|
| mmHg | Millimeter of mercury |
| bar | Bar |
mmHg to Bar examples
1 mmHg
1 mmHg × 0.001333224 = 0.001333224 bar.
10 mmHg
10 mmHg × 0.001333224 = 0.01333224 bar.
100 mmHg
100 mmHg × 0.001333224 = 0.1333224 bar.
mmHg compared with Bar
One bar is 750.1 times as large as one mmHg, so your number gets smaller when you convert mmHg to bar and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About mmHg and bar
Millimeter of mercury (mmHg): Millimetre of mercury, about 133.322 pascals. Bar (bar): Exactly 100,000 pascals.
Where mmHg to bar conversions are used
Hydraulics, boilers and pneumatic tools list their limits in bar, psi or MPa. Tyre pressure is shown in psi, bar or kPa, depending on the vehicle and country.
How to calculate mmHg to Bar step by step
- Enter the value in mmHg (the starting unit).
- Multiply by 0.001333224, because 1 mmHg = 0.001333224 bar.
- The product is the value in bar. To go back, divide by 0.001333224 or multiply by 750.0616.
Popular pressure conversions
How to read your mmHg to Bar result
Quick estimate: multiply by about 0.00133 to get bar from mmHg; this is within 0.3% of the exact factor. One standard atmosphere is exactly 101,325 Pa, and one bar is exactly 100,000 Pa.
| MMHG | BAR |
|---|---|
| 1 | 0.001333224 |
| 2 | 0.002666448 |
| 5 | 0.006666119 |
| 10 | 0.01333224 |
| 20 | 0.02666448 |
| 50 | 0.06666119 |
| 100 | 0.1333224 |
| 1,000 | 1.333224 |
Bar to mmHg: quick table
| BAR | MMHG |
|---|---|
| 1 | 750.0616 |
| 5 | 3,750.308 |
| 10 | 7,500.616 |
| 25 | 18,751.54 |
| 50 | 37,503.08 |
| 100 | 75,006.16 |
| 250 | 187,515.4 |
| 500 | 375,030.8 |
Common mistakes when calculating mmHg to Bar
- Reading mmHg and Torr as clearly different units: they differ by only about one part in seven million.
- Dividing when you should multiply: from mmHg to bar multiply by 0.001333224; from bar to mmHg divide by 0.001333224.
mmHg to Bar FAQ
How many bar are in 1 mmHg?
1 mmHg equals 0.001333224 bar.
How many mmHg are in 1 bar?
1 bar equals 750.0616 mmHg.
Is 1 mmHg = 0.001333224 bar an exact conversion?
The factor is shown rounded to 7 significant figures (0.001333224). The calculator above uses more digits.
What is a bar (bar)?
Exactly 100,000 pascals.
How can I estimate mmHg to bar in my head?
Quick estimate: multiply by about 0.00133 to get bar from mmHg; this is within 0.3% of the exact factor.
What is 75 mmHg in bar?
75 mmHg = 0.09999179 bar (since 75 × 0.001333224).
What is 300 mmHg in bar?
300 mmHg = 0.3999672 bar (since 300 × 0.001333224).
What is 12 mmHg in bar?
12 mmHg = 0.01599869 bar (since 12 × 0.001333224).
How many decimals should I keep when converting mmHg to bar?
Match the precision of your original measurement. For example, 0.01333224 bar rounds to 0.0133 bar at 3 significant figures; keep more digits only for engineering or scientific work.
More in Pressure converters
- mmHg to PSI Converter
- kPa to Pascals Converter
- Pascals to Atmospheres Converter
- kPa to mmHg Converter
- Pascals to Bar Converter
- kPa to Bar Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the SI derived units