Understanding and converting different units of pressure can sometimes feel complicated - especially as there are several different systems used in parallel in industry, engineering and science. Bar, Pascal (Pa), atmosphere (atm) and millimeters of mercury (mmHg) are some of the most common units that appear in everyday life, in laboratories and in technical specifications.
To make it easier, we have gathered here practical conversion examples where you can see how to convert between the most common units of pressure. Perfect for those who work with measuring instruments, construction, medical technology or just want to double-check conversions.
Conversion for printing
| Pressure | mm Hg | in Hg | mvp | kp/cm2 | atm | lb/sq in | bar=105 N/m2 | kPa=103 N/m2 |
|---|---|---|---|---|---|---|---|---|
| 1 mm Hg | 1 | 0,039 | 0,0136 | 0,00136 | 0,001317 | 0,01934 | 0,00133 | 0,133 |
| 1 in Hg | 25,40 | 1 | 0,0346 | 0,0346 | 0,0334 | 0,491 | 0,035 | 3,386 |
| 1 mvp | 73,53 | 2,894 | 1 | 0,1 | 0,09678 | 1,422 | 0,09785 | 9,785 |
| 1 kp/cm2=at | 735,3 | 28,939 | 10 | 1 | 0,9678 | 14,22 | 0,9807 | 98,07 |
| 1 atm | 759,3 | 29,921 | 10,33 | 1,033 | 1 | 14,70 | 1,013 | 101,3 |
| 1 lb/sq in=psi | 51,71 | 2,036 | 0,07032 | 0,07032 | 0,068 | 1 | 0,06894 | 6,894 |
| 1 bar=105 N/m2 | 751,88 | 28,94 | 10,220 | 1,020 | 0,9872 | 14,505 | 1 | 100 |
| 1 kPA=103 N/m2 | 7,52 | 0,295 | 0,1022 | 0,0102 | 0,009872 | 0,14505 | 0,01 | 1 |
| 1 MPa=106 N/m2 | 7518,80 | 2893,9 | 102,20 | 10,20 | 9,87 | 145,05 | 10 | 1000 |
How much is 1 bar in Pa?
1 bar is equal to 100 000 Pascal (Pa).
Example calculation bar to Pa:
If you have a pressure of 3 bar:
3 × 100 000 = 300 000 Pa
Thus, the 3 bar = 300 000 Pa.
How much is 1 atm in Pa?
1 atm (atmosphere) is equal to 101 325 Pascal (Pa).
Example calculation atm to Pa:
If you have a pressure of 0.75 atm:
0,75 × 101 325 = 75 993,75 Pa
Thus, the 0.75 atm ≈ 75 994 Pa.
How much is 1 mmHg in Pa?
1 mmHg (millimeter of mercury) is equal to 133,322 Pascal (Pa).
Example calculation mmHg → Pa:
If you have a pressure of 650 mmHg:
650 × 133,322 = 86 659,3 Pa
Thus, the 650 mmHg ≈ 86 659 Pa.
"*"indicates required fields
