Convert millimeters of mercury to pascals
Converting millimeters of mercury to pascals is a common pressure task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 mmHg equals 133.322 Pa, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert millimeters of mercury to pascals
To convert millimeters of mercury to pascals, multiply the number of millimeters of mercury by 133.322. For example, 10 mmHg × 133.322 = 1,333.22 Pa.
Pa = mmHg × 133.322
- Write down the value in millimeters of mercury you want to convert.
- Multiply it by 133.322 (the exact mmHg→Pa factor).
- The result is your value in pascals. Check it below with the converter or the table.
Conversion table
Common values of millimeters of mercury and their equivalents in pascals:
| mmHg | Pa |
|---|---|
| 1 | 133.322 |
| 2 | 266.645 |
| 3 | 399.967 |
| 4 | 533.29 |
| 5 | 666.612 |
| 10 | 1,333.22 |
| 20 | 2,666.45 |
| 25 | 3,333.06 |
| 50 | 6,666.12 |
| 100 | 13,332.2 |
| 250 | 33,330.6 |
| 500 | 66,661.2 |
About these units
Millimeter of Mercury (mmHg). A millimeter of mercury is the pressure exerted by a one-millimeter column of mercury, about 133.32 pascals. Blood pressure and vacuum measurements are still quoted in mmHg.
Pascal (Pa). The pascal is the SI unit of pressure, one newton per square meter. Because it is small, practical values are often quoted in kilopascals, bar or atmospheres.
Frequently asked questions
How do I convert millimeters of mercury to pascals?
To convert millimeters of mercury to pascals, multiply the number of millimeters of mercury by 133.322. For example, 10 mmHg × 133.322 = 1,333.22 Pa. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many pascals are in 1 millimeter of mercury?
1 mmHg = 133.322 Pa. That is the fixed relationship used by this converter and by international standards.
How many millimeters of mercury are in 1 pascal?
1 Pa = 0.00750062 mmHg. If you are converting in the opposite direction, use our Pascal to Millimeter of Mercury converter for the dedicated table and FAQ.
Is the millimeters of mercury to pascals conversion exact?
Yes. Both units are defined by international agreement, so the factor of 133.322 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is millimeter of mercury used for?
A millimeter of mercury is the pressure exerted by a one-millimeter column of mercury, about 133.32 pascals. Blood pressure and vacuum measurements are still quoted in mmHg.