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Use this Pressure Conversion Tool to calculate equivalent pressure values across multiple measurement units. Simply enter a value into any input field, and the corresponding pressure values in all other units will be calculated instantly.
Introduction
Pressure is defined as the physical force exerted on an object. Specifically, it is the force applied perpendicular to the surface of an object divided by the area over which that force is distributed.
The Pascal (Pa) is the standard unit of pressure in the International System of Units (SI).
Mathematically, pressure is expressed as:
Where:
Our Pressure Conversion Calculator allows you to switch between units used in different industries and regions. Here are the most frequently used units:
Use the table below to quickly convert between the most common pressure units.
| To Convert From | To Pascal (Pa) | To Bar | To Atmosphere (atm) | To PSI (lbf/in²) | To Torr (mmHg) |
|---|---|---|---|---|---|
| 1 Pascal (Pa) | 1 | 0.00001 | 0.00000987 | 0.000145 | 0.0075 |
| 1 Bar | 100,000 | 1 | 0.98692 | 14.5038 | 750.06 |
| 1 Atm | 101,325 | 1.01325 | 1 | 14.6959 | 760 |
| 1 PSI | 6,894.76 | 0.06895 | 0.06805 | 1 | 51.715 |
| 1 Torr | 133.322 | 0.00133 | 0.00132 | 0.01934 | 1 |
| 1 kg/cm² | 98,066.5 | 0.98067 | 0.96784 | 14.2233 | 735.56 |
The most frequently used units of pressure are pascal (Pa), kilopascal (kPa), megapascal (MPa), psi (pound per square inch), torr (mmHg), atm (atmospheric pressure), and bar.
For pressure, the SI system's basic unit is Pascal (Pa), which is N/m² (Newton per square meter, while Newton is kgm/s²). Pascal is a very small pressure unit and for example, the standard atmospheric pressure is 101325 Pa absolute.
PSI is a unit of measure for pressure, and pressure (PSI) is the amount of force (lbf) applied per unit of area (in2). The equations below illustrate this. To convert PSI to lbs, simply multiply the pressure by the area over which the force is applied.
The SI unit of the pressure is the pascal with the formula sign Pa. 1 Pascal is equal to the pressure of 1 newton per square meter. 1 Pa = 1 N / m2 ≡ 1 kg / m · s2.
Vacuum pressure is measured relative to ambient atmospheric pressure. It is referred to as pounds per square inch (vacuum) or PSIV. The electrical output of a vacuum pressure transducer is 0 VDC at 0 PSIV (14.7 PSIA) and full-scale output (typically 5 VDC) at full-scale vacuum, 14.7 (0 PSIA).
A pascal is a unit of pressure, where one pascal is equal to the force of one newton exerted on one square meter. A pascal is a unit of pressure, where one pascal is equal to the force of one newton exerted on one square meter.
Pressure—the effect of a force applied to a surface—is a derived unit, obtained from combining base units. The unit of pressure in the SI system is the pascal (Pa), defined as a force of one Newton per square meter. The conversion between atm, Pa, and torr is as follows: 1 atm = 101325 Pa = 760 torr.
The body is a lot more resilient than you think. The human body can withstand 50 psi (pounds per square inch) and that's if it's a sudden impact. However if it's sustained pressure, the body can withstand up to 400 psi if the weight is gradually increased.
Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter or N/m2. If you convert an atmosphere to pounds per square inch, it's about 14.7 psi.
At atmospheric pressure, the value 0 in. -Hg is equivalent to 14.7 psia. At the opposite reference point, 0 psia, — a perfect vacuum (if it could be attained) — would have a value equal to the other extreme of its range, 29.92 in. -Hg.
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