Quickly choose from 8 common measurands that we all use everyday, and convert measurements to different units for Length, Mass, Temperature, Time Period, Area, Volume, Pressure and Speed.
Pressure Measurement
US/Imperial & Metric Units Converter
Convert between us / imperial and metric units for measurements of length, area, volume, speed, temperature, mass, force, and pressure.
Pressure Sensor Calibration Error Calculator
Use this tool to calculate the output error of a pressure sensor by entering the calibration reference pressure reading, pressure sensor range and measured output.
Pressure Sensor Output Calculator
This tool will calculate the expected output signal from a pressure sensor of a certain specified pressure range and applied pressure. It is also possible to reverse the function of the tool to calculate the applied pressure expected to produce a specific output reading.
Pressure Sensor Calculator
This multi-function tool can be easily adapted to calculate all the main parameters required by users when setting up, configuring and calibrating the different types of pressure sensors.
Push Pull Hydraulic Cylinder Pressure, Diameter and Force Calculator
This tool will calculate the pressure, bore diameter, rod diameter, push force and pull force parameters for a hydraulic cylinder used to cause movement by extending and retracting a rod connected to a mechanical component.
Pressure Transmitter 0-20mA Current Output Calculator
This pressure transmitter 0 to 20 milliamp current output calculator provides a way to determine the output reading from the applied pressure and pressure transmitter range.
Two Connected Hydraulic Cylinders Force, Diameter and Displacement Calculator
This tool will calculate force, diameter and displacement parameters for two hydraulic piston cylinders of different diameters connected together.
Fluid Depth, Density, Gravity, and Pressure Calculator
This tool will calculate any of parameters defined by the hydrostatic pressure formula P=ρgh which includes depth, density, gravity and pressure.
Elevation, Station (QFE) and Sea Level (QNH) Pressure Calculator
This tool which is based on the icao standard atmosphere model will calculate the station elevation relative to sea level, station pressure or the sea level pressure used for QFE or QNH setting altimeters.
ICAO Standard Atmosphere Altitude and Pressure Calculator
This tool which is based on the icao standard atmosphere model will calculate the air pressure at a height above or below sea level, the altitude from the atmospheric air pressure at the same level, the pressure difference between two altitudes, and the altitude difference between two atmospheric pressures.
US Standard Atmosphere Altitude and Pressure Calculator
This tool which is based on the us standard atmosphere model will calculate the air pressure at a height above or below sea level, the altitude from the atmospheric air pressure at the same level, the pressure difference between two altitudes, and the altitude difference between two atmospheric pressures.
Pressure Sensing Errors Calculator
This tool will calculate the total worst case & root sum squared pressure error band, long term stability, thermal effects error, room temperature accuracy or pressure value for a pressure sensing device.
Pressure Measurement Accuracy and Error Calculator
This tool will calculate the pressure error, accuracy factor or pressure range value for a pressure measurement device.
Combined Gas Law Calculator
This tool will calculate any parameter from the equation for the combined gas law P₁V₁/T₁=P₂V₂/T₂ which is derived by combining Boyle’s, Charles’ and Gay-Lussac’s law
Gay-Lussac’s Law Calculator
This tool will calculate any parameter from the equation defined by Gay-Lussac’s law P₁/T₁=P₂/T₂
Boyle’s Law Calculator
This tool will calculate any parameter from the equation defined by Boyle’s law P₁V₁=P₂V₂
Ideal Gas Law Calculator
This tool will calculate any parameter from the equation for the ideal gas law PV=nRT
Leak Rate Calculator
This tool will calculate any parameter from the formula for leakage rate from a pressurised enclosed space Q=ΔPV/t
Leak Rate Converter
This conversion tool will convert the leakage rate for a gas filled or a vacuum sealed volume into different units
Piston Cylinder Force and Pressure to Diameter Calculator
This tool will calculate the theoretical bore diameter of a piston cylinder assembly by entering values for the piston force and the pressure within the cylinder ø=√(4F/(πP))
Force & Pressure to Area Calculator
Use this calculator to determine the area of a contact surface which when subjected to a defined applied force results in generating the selected pressure A=F/P
What does negative and positive gauge pressure mean
You may not be aware but nearly every pressure measurement device you are using has a positive or negative gauge reference.
Can you measure vacuum using a gauge pressure range
The most common type of pressure range for pressure measurement instrumentation is one which has a gauge reference. So if you want to measure vacuum pressure, it would be convenient to use a gauge pressure device which is the most widely available pressure range format.
What is the difference between vacuum and absolute pressure
Often you will see a measurement of vacuum pressure described as an absolute pressure reading, so is there any difference between the two?
Suction Pressure to Vacuum Calculator
This tool will calculate the absolute referenced vacuum pressure by subtracting the suction from the barometric pressure reading you entered and convert any combination of pressure units for each pressure value.
Vacuum to Suction Pressure Calculator
This tool will calculate the suction pressure by subtracting the vacuum pressure reading from the barometric pressure reading you entered and convert any combination of pressure units for each pressure value.
Absolute – Barometric to Gauge Pressure Calculator
This tool will calculate the gauge pressure by subtracting the barometric pressure from the absolute referenced pressure reading you entered and convert any combination of pressure units for each pressure value.
Gauge + Barometric to Absolute Pressure Calculator
This tool will calculate the absolute pressure by adding together the gauge pressure and related barometric pressure reading you entered and convert any combination of pressure units for each pressure value.
High and Low Side Pressure to Differential Pressure Calculator
This tool will calculate the differential pressure from a high and low side pressure reading and convert any combination of pressure units for each pressure value.
Pressure Measurement
One of the most common measurements on any machine or process is pressure. Air, gas and liquids are used extensively on many types of machines as the medium used to operate moving parts.
Pressure Transducer 0.5-4.5V Voltage Output Calculator
This pressure transducer 0.5 to 4.5 volts amplified output calculator provides a way to determine the output reading from the applied pressure and pressure transducer range.
Pressure Transducer 1-5V Voltage Output Calculator
This pressure transducer 1 to 5 volts amplified output calculator provides a way to determine the output reading from the applied pressure and pressure transducer range.
Pressure Transducer 0-5V Voltage Output Calculator
This pressure transducer 0 to 5 volts amplified output calculator provides a way to determine the output reading from the applied pressure and pressure transducer range.
Pressure Transducer 0-10V Voltage Output Calculator
This pressure transducer 0 to 10 volts amplified output calculator provides a way to determine the output reading from the applied pressure and pressure transducer range.
Pressure Transmitter 4-20mA Current Output Calculator
This pressure transmitter 4 to 20 milliamp current output calculator provides a way to determine the output reading from the applied pressure and pressure transmitter range.
Pressure Transducer Millivolt (mV) Output Calculator
This pressure transducer millivolt output calculator provides a way to determine the output reading and range from the applied pressure, pressure transducer range and strain gauge output characteristics.
How do you measure the volume of a liquid using pressure
It is not possible to measure the volume directly, and unfortunately there is no such device as a volume sensor, however if you know the dimensions of the space filled with liquid, you can easily determine the volume.
Climate room over/under pressure, temperature & RH monitor & controller
Wall mounted instrument for monitoring & controlling the climate in a room including room pressure, humidity and temperature sensor.
Dead Weight Tester Pressure & Area to Mass Calculator
This online tool will calculate the required mass to be added to a dead weight tester pressure calibrator by entering the target pressure, the effective area of the piston-cylinder and the local gravity, m=PA/g
Dead Weight Tester Mass & Area to Pressure Calculator
This online tool will calculate the pressure generated by a dead weight tester pressure calibrator by entering the total mass of added weights, the effective area of the piston-cylinder and the local gravity, P=mg/A
Piston Cylinder Force and Diameter to Pressure Calculator
This tool will calculate the pneumatic/hydraulic pressure generated by a piston cylinder for a specified force and piston-cylinder bore diameter, P=4F/πø²
Piston Cylinder Pressure and Diameter to Force Calculator
This tool will calculate the force generated by a piston cylinder for a specified pneumatic/hydraulic pressure and piston-cylinder bore diameter, F=Pπø²/4
Pressure Converter
Convert pressure units with the pressure converter, look up a conversion using tables, identify a pressure unit and find a pressure conversion factor.
Liquid Level to Hydrostatic Pressure Calculator
This calculator and conversion scale will convert the depth of fluid to a measurement of hydrostatic pressure, P = L·ρ₀·SG·g
Pressure to Liquid Level Calculator
This calculator and conversion scale will determine the liquid height from the hydrostatic pressure, L = P/(ρ₀·SG·g)
Absolute Pressure
A guide to absolute pressure measurement including explanations, applications and choice of products for measurements using a absolute reference.
Compound Pressure Ranges
Compound pressure ranges include both a positive and negative pressure range in one pressure measurement device.
Hydrostatic Pressure
Hydrostatic pressure is the pressure that is generated by the weight of liquid above a measurement point, when the liquid is at rest.
Differential Pressure
A guide to differential pressure measurement including explanations, applications and choice of products for measuring differential pressure
Suction Pressure
Suction pressure is a negative difference in pressure generated between two points which draws a gas or a liquid from a higher to a lower pressure state.
Pressure
Pressure is the amount of force applied to a unit area and is calculated by dividing the applied force by the area of the contact surface.
Gauge Reference Pressure
Gauge reference pressure is a pressure measured relative to atmospheric or barometric pressure. The most used pressure reference is gauge pressure which is signified by a (g) after the pressure unit (e.g. 30 psi g), and means that the pressure measured is the total pressure minus atmospheric pressure. There are two types of gauge reference […]
Clean Room Monitor for Air Differential Pressure, Temperature and Humidity – PMDS4
The PMDS4 clean room monitor is designed for positive and negative monitoring of differential air pressure between the inside and outside of a clean room.
Pressure & Area to Force Calculator
This tool will calculate the force generated by a pressure acting over a specified surface area and show a conversion scale for each set of input values, F=PA
Force & Area to Pressure Calculator
Use this calculator to determine the pressure generated by a force acting over a surface that is in direct contact with the applied load, P=F/A
Measurement Accuracy
There are many contributing error factors which go into a total uncertainty calculation. The way accuracy is defined for pressure instruments on technical data sheets can vary significantly across manufacturers and product types.
Barometric Pressure
A guide to barometric pressure measurement including explanations, applications and choice of products for measuring barometric pressure.
What does the suffix a, abs, d, dp and diff, g, rel and sg mean after the pressure units in a pressure range?
There is a loose convention across manufacturers for designating the type of reference that a pressure sensing device has, which can be confusing if you are unfamiliar with specifying this often overlooked but critical specification parameter.
How does the accuracy of pressure measurement devices change over time
Not even the most accurate pressure instruments will hold their accuracy indefinitely, all are prone to drift over time.
Pressure Measurement Glossary
Look up a word or phrase to find a page with more information on the chosen pressure measurement topic.