Engineering Units
Pressure Converter
Pressure is force per unit area, in pascals (N/mΒ²). Civil engineering uses MPa for concrete strength and kgf/cmΒ² for design stresses, while psi and bar dominate mechanical systems.
Smart input
Popular conversions
β
Quick values:
Conversion formula
The exact formula applied:
β
About this category: Pressure
Pressure is force per unit area, in pascals (N/mΒ²). Civil engineering uses MPa for concrete strength and kgf/cmΒ² for design stresses, while psi and bar dominate mechanical systems.
In civil engineering MPa is used for concrete strength (and MPa = N/mmΒ²), kgf/cmΒ² for design stresses, and psi/bar in mechanical systems.
Practical uses
- Concrete strength (MPa, N/mmΒ², kgf/cmΒ²)
- Design stresses, soil and foundations
- Hydraulic, pneumatic and tyre systems
Available units
| Unit | Name | Definition | Classification |
|---|---|---|---|
| Pa | Pascal | One newton per square metre, the SI pressure unit. | SI Derived |
| kPa | Kilopascal | One thousand pascals. | SI Derived |
| MPa | Megapascal | One million pascals, exactly equal to N/mmΒ², used for concrete strength. | SI Derived |
| bar | Bar | The bar is a non-SI unit of pressure = 100,000 pascals = 0.1 MPa. | Non-SI |
| mbar | Millibar | One millibar = 100 pascals, used in meteorology. | Non-SI |
| atm | Standard Atmosphere | Standard atmospheric pressure = 101,325 pascals. | Non-SI |
| psi | Pound per Square Inch | Pounds per square inch. | Non-SI |
| mmHg | Millimeter of Mercury | One mmHg = 133.322 pascals, also called a torr. | Non-SI |
| inHg | Inch of Mercury | One inHg = 3386.39 pascals, used in weather and aviation. | Non-SI |
| at | Technical Atmosphere | One technical atmosphere = 1 kgf/cmΒ² = 98,066.5 pascals. | Non-SI |
| kgf/cmΒ² | Kilogram-force per square centimetre | One kgf/cmΒ² = 98,066.5 pascals, common in design stresses and hydraulics. | Non-SI |
| cmHβO | Centimeter of Water | One cmHβO = 98.0665 pascals, used in HVAC and plumbing. | Non-SI |
Related categories
Convert to every unit in this category
Instant values for all units based on your input
Popular Pressure conversions
Common engineering conversions
Megapascal β Pound per Square InchMegapascal β BarKilogram-force per square centimetre β MegapascalPound per Square Inch β BarMPa = N/mmΒ² (identical)Kilonewton β NewtonKilonewton β Kilogram-forceCubic Meter β Cubic FootSquare Meter β Square FootKilogram per Cubic Meter β Pound per Cubic FootMillimeter β InchCentimeter β InchMeter β FootNewton-metre β Pound-force-footCubic Meter per Second β Cubic Meter per Hour