What are 5 common units of pressure and their conversions?
Final Thoughts
| Unit | Symbol | Atmospheric Pressure |
|---|---|---|
| Atmosphere | atm | 1 |
| torr | Torr | 760 |
| bar | bar | 1.013 |
| Pounds per Square Inch | psi or lb/in2 | 14.69 |
Is mmHg and torr the same?
A barometer measures gas pressure by the height of the column of mercury. One unit of gas pressure is the millimeter of mercury (mmHg). An equivalent unit to the mmHg is called the torr, in honor of the inventor of the barometer, Evangelista Torricelli.
How do you convert hPa to altitude?
Multiply the atmospheric pressure in hectopascals times 100 using a scientific calculator. For example, the pressure is 1037 hPa: 1037 x 100 = 103700. Divide your answer by 101325 using a scientific calculator. For example, 103700/101325 = 1.2034.
How do you convert cm to pressure?
For example, if your pressure reading was 500 cm water, you would enter 500. Divide the value you just entered by 1.36. This number is a conversion factor based on the relative densities of water and mercury and also the difference between centimeters and millimeters. In the example, you would calculate 500/1.36 = 368.
What are the SI units of pressure?
The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg·m−1·s−2). Pascal is a so-called coherent derived unit in the SI with a special name and symbol.
What is the unit to measure pressure?
In science, pressure is a measurement of the force per unit area. The SI unit of pressure is the pascal (Pa), which is equivalent to N/m 2 (newtons per meter squared).
What are the different units of pressure?
The SI unit for pressure is the pascal (N/m 2), but other common units of pressure include pounds per square inch (psi), atmospheres (atm), bars, inches of mercury (in. Hg), millimeters of mercury (mm Hg), and torr. A pressure measurement can be described as either static or dynamic.
How is the SI unit of pressure defined?
The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg·m−1·s−2). This name for the unit was added in 1971; before that, pressure in SI was expressed simply in newtons per square metre.
How do you convert pressure to ATM?
1 Psi (pound force per square inch) is equal to 0.06804596379 atmospheric pressure (atm). To convert psi to atm, multiply the psi value by 0.06804596379 or divide by 14.6959488.