There are many types of pressure units used depending on the country, industry and application.
Measurement Units
Kelvin Temperature Conversion Table for 0K to 1,000K
Look up a temperature from 0 to 1000 Kelvin (K) to convert it to degrees Celsius (°C) or Fahrenheit (°F).
Fahrenheit Temperature Conversion Table for -100°F to 1,000°F
Look up a temperature from -100 to 1000 degrees Fahrenheit (°F) to convert it to degrees Celsius (°C) or Kelvin (K).
Celsius Temperature Conversion Table for -100°C to 1,000°C
Look up a temperature from -100 to 1000 degrees Celsius (°C) to convert it to degrees Fahrenheit (°F) or Kelvin (K).
Barometric mbar/hPa, psi, inHg, mmHg/Torr Conversion Table
Look up a barometric conversion value for millibar (mbar, mb), hectopascal (hPa), pounds per square inch (psi), inches of mercury (inHg), millimetres of mercury (mmHg) or Torr pressure units.
inH2O to mmH2O, mbar, psi and mmHg Conversion Table
Look up a low pressure in inches of water column to find the conversion value in millimetres of water, millibar, pounds per square inch or millimetres of mercury.
mH2O to ftH2O, bar, psi and inHg Conversion Table
Look up a liquid level in metres of water column to find the conversion value in feet of water, bar, pounds per square inch or inches of mercury.
psi to mbar, hPa, Bar, inHg, mH2O, inH2O and ftH2O Conversion Table
Look up a pressure in pounds per square inch (psi) to find the conversion value in mb, hPa, bar, inHg, mH2O, inH2O or ftH2O.
bar to psi, inHg, mH2O and ftH2O Conversion Table
Look up a pressure for 1 to 1000 bar to find the conversion value in pounds per square inch, inches of mercury, metres of water column or feet of water column.
bar Pressure Unit
The bar is a widely used metric unit of measurement for pressure and 1 bar equals precisely 100,000 pascals.
cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
Centimeters of Water Column is a manometric unit used to relate a pressure reading to the height of fresh water at a temperature of 4 degC. 1 centimeter of water gauge equals 98.0665 pascals.
cmHg – Centimetres of Mercury at 0 deg C Pressure Unit
Centimeters of Mercury is a small pressure unit which represents the pressure pushing down due to gravity of any volume of liquid mercury which is 1cm high. 1 centimeter of mercury at zero degrees Celsius equals 1333.22 pascals. The use of cmHg is not as common as mmHg, it is mainly used in applications for […]
dyn/cm² – Dyne per Square Centimetre Pressure Unit
Dyne per Square Centimeter is one of the smallest pressure units and is derived from the CGS unit for force, 1 Dyne per Square Centimetre equals 0.1 pascals.
ftH2O – Feet of Water Column at 4 deg C Pressure Unit
Foot of Water Column is an American and English low value pressure unit
g/cm² – Grams per Square Centimetre Pressure Unit
Grams Force per Square Centimetre is a cgs system pressure unit which is now largely obsolete and officially superceded by the SI system of units.
g – Acceleration due to Gravity
Gravity (g) which is defined by an acceleration of 9.80665m/s² is the designated average accelerating force due to Earth’s gravity at sea level.
hPa – Hectopascal Pressure Unit
Hectopascal is a 100x multiple of the pascal which is the SI unit for pressure.
inH2O – Inches of Water Column at 4 deg C Pressure Unit
Inches of water gauge or column is an english and american unit for measuring liquid level. 1 inch of water column at 4 degrees celsius equals 249.089 Pa.
inHg – Inches of Mercury at 0 degrees C Pressure Unit
Inch of Mercury is a British and American unit of measure for pressure. 1 inch of mercury at 0 degrees Celsius (32 deg F) equals 3386.39 pascals. An inch of mercury at zero degrees Celsius is defined as the pressure exerted by a column of mercury with a density of 13,595.1 kg/m3 under the pull […]
kg/cm² – Kilogram per Square Centimetre Pressure Unit
Kilogram Force per Square Centimeter is a pressure unit that has been largely superseded by the SI unit system of pascal units.
kPa – Kilopascal Pressure Unit
The kilopascal is a x1000 multiple of the pascal unit which is the SI unit for pressure. 1 kilopascal equals 1,000 Pascals.
MPa – Megapascal Pressure Unit
The megapascal is a x1000000 multiple of the pascal unit which is the SI unit for pressure. 1 megapascal equals 1,000,000 pascals.
mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
Meters of water gauge or column is a metric unit for measuring liquid level. 1 metre of water column at 4 degrees Celsius equals 9806.65 pascals.
µHg – Micron of Mercury at 0 deg C Pressure Unit
Micron of Mercury is a very small pressure unit derived from the pressure that is generated by a 1 micrometer (1/1000mm) column of liquid mercury.
mbar – Millibar Pressure Unit
Millibar is a metric unit of pressure mainly used in European countries and is derived directly from the bar pressure unit which equals 1,000 mbar.
mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
Millimeters of Water Column is a low range metric pressure unit derived from the hydrostatic pressure of 1mm head of water at 4 degC.
mmHg – Millimetres of Mercury at 0 deg C Pressure Unit
Millimeters of Mercury at a temperature of 0degC is a small metric pressure unit derived from the pressure generated by a 1mm tall column of mercury liquid.
mTorr – Millitorr Pressure Unit
Millitorr is a very small pressure unit used for high vacuum measurements and is a 1/1000x multiple of the torr pressure unit.
N/m2 – Newton per Square Metre Pressure Unit
Newtons/Square Meter is a unit that shows how the pascal unit is derived from other SI units. Pressure is defined as Force/Area and the SI unit for Force is newtons (N) and the SI unit for Area is Sq Meters (m²). 1 newton per square metre equals 1 pascal. The N/m² pressure unit is one […]
oz/in² – Ounce per Square Inch Pressure Unit
Ounce or Ounce Force per Square Inch is a low pressure unit which is part of the British and American system of units.
Pa – Pascal Pressure Unit
Pascal is the SI unit for pressure and is derived from other SI units using the following relationship: Pa = (kg.m/s²)/m² = kg/m.s² = N/m².
psf – Pounds per Square Foot Pressure Unit
Pounds Force per Square Foot is a British (Imperial) and American pressure unit which is directly related to the psi pressure unit by a factor of 144.
psi – Pounds per Square Inch Pressure Unit
Pounds or pound force per square inch (psi, lb/in², pfsi or lbf/in²) is a widely used British and American unit of measure for pressure.
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.
Specific Gravity
Specific gravity is a comparison ratio between the density of a particular substance and the density of a reference substance.
atm – Standard Atmosphere Pressure Unit
Standard Atmosphere is mainly used as a reference value for the average atmospheric pressure at sea level.
at – Technical Atmosphere Pressure Unit
Technical Atmosphere is used to represent a pressure value in multiples of atmospheric pressure.
tsf – Tons per Square Foot (USA, Short) Pressure Unit
Tons or Tons Force per Square Foot (USA, Short) is an American pressure unit comparable in magnitude to atmospheric pressure.
tsi – Tons per Square Inch (UK, Long) Pressure Unit
Tons or Tons Force per Square Inch (UK, Long) is a very large pressure unit used historically for measuring extremely high pressures.
tsi – Tons per Square Inch (USA, Short) Pressure Unit
Tons or Tons Force per Square Inch (USA, Short) is one of the largest pressure units and is used in the measurement of ultra high pressures. 1 ton per square inch (usa, short) equals 13,789,500 pascals. This is the American version of tons per square inch which uses the so called short ton that is […]
Torr Pressure Unit
Torr is a pressure unit which is defined as 1 standard atmosphere divided by 760 (1 atm/760 or 101325 Pa/760).
Water Density
The density of fresh water at a temperature of approximately 4 degrees Celsius is 1000 kg/m3.
Time Taken and Average Speed to Travel Distance Calculator
Estimate travel range from the time taken and the average speed and show a conversion chart for different time and distances at the same speed, d=v/t
Distance and Average Speed to Travel Time Calculator
Estimate travel time using distance to destination and average speed, and display a conversion table for distance vs time with a constant speed, t=d/v
Distance and Time Taken to Average Speed Calculator
Calculate average speed from total distance travelled and time taken and display conversion scales for distance and time vs speed, v=d/t
Period to Frequency Calculator
This tool will convert the period to the equivalent frequency value, by calculating the number of cycles or revolutions per unit period of time from the time it takes to complete one full cycle or revolution, f=1/T, ω=2π/T
Frequency to Period Calculator
This tool will convert frequency to a period by calculating the time it will take to complete one full cycle or revolution at the specified frequency, T=1/f, T=2π/ω
Distance Travelled & Fuel Volume Used to Fuel Economy Calculator
This fuel economy calculator will take the distance travelled and the quantity of liquid fuel used by a petrol, gasoline or diesel engine powered motor vehicle, and determine the average fuel economy performance for that journey, FE=d/V
Area to Diameter of Circle Calculator
This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter, ø=2√(A/π)
Diameter to Area of Circle Calculator
This tool will calculate the area of a circle from the diameter, and will convert different measurement units for diameter and area, A=¼πø²
Mass Flow & Density to Volume Flow Calculator
Use this calculator to convert mass to volumetric flow rate using substance density and display a unique conversion chart related to the entered values, Q=ṁ/ρ
Volume Flow & Density to Mass Flow Calculator
Use this calculator to convert volumetric to mass flow rate using the substance density, ṁ=Qρ
Volume Flow & Speed to Area Calculator
Calculate the flow area from the rate of volume flow and the speed of the flow, A=Q/v
Volume Flow & Area to Flow Velocity Calculator
Calculate speed of flow from the volumetric flow rate and cross-sectional area of flow, v=Q/A
Flow Velocity & Area to Flow Rate Calculator
Calculate the volumetric flow rate from a specified flow velocity through a defined cross-sectional area, Q=v·A
Total Time & Flow Rate to Total Mass Calculator
Calculate the total mass that will pass during a specified time period and average flow rate, m=t·ṁ
Total Time & Flow Rate to Total Volume Calculator
Calculate the volume transferred over specified flow rate and time period, V=tQ
Total Mass & Flow Rate to Total Time Calculator
Calculate elapsed time for total mass to flow at a set rate, and show a conversion chart for mass vs flow rate which refreshes when an input is changed, t=m/ṁ
Total Volume & Flow Rate to Total Time Calculator
Calculate the amount of elapsed time from the flow rate and the total volume transferred, plus display a conversion chart for volume vs elapsed time, t=V/Q
Total Mass & Total Time to Flow Rate Calculator
Calculate the avg. mass flow rate from mass and elapsed time period, and show charts for mass and time period vs flow rate that reset for each calculation, ṁ=m/t
Total Volume & Total Time to Flow Rate Calculator
Calculate the avg. volumetric flow rate from total volume flowed over a period of time and display conversion scales for volume and time vs flow rate, Q=V/t
Volume & Density to Mass Calculator
This calculator is used to determine the mass from the volume and density, and show a conversion scale from volume to mass centred around each calculation, m=Vρ
Mass & Density to Volume Calculator
This calculator will determine the volume of a substance from the measured mass and known density, and also display a mass to volume conversion scale, V=m/ρ
Mass & Volume to Density Calculator
This calculator will determine object density from entered mass and volume, and display two conversion scales of mass vs density and volume vs density, ρ=m/V
Weight to Mass Calculator
This tool calculates the mass of an object from the measured weight and local gravity for the required geo location on earth or any other source of gravitational pull, m=F/g
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
Mass to Weight Calculator
Use this calculator to determine the weight of an object from its mass and the acceleration due to gravity at a particular geographical location or any other source of gravitational attraction, F=mg
Rectangular Shaped Tank Contents Calculator
This tool calculates the volume of liquid held in a rectangular shaped tank using the measured level of the fluid.
Horizontal Cylindrical Shaped Tank Contents Calculator
This calculator will take the measurement of liquid height from a horizontal cylinder tank and convert it to liquid volume held in the tank.
Vertical Cylindrical Shaped Tank Contents Calculator
Use this calculator tool to determine the amount of contents in a upright cylinder shaped liquid storage tank from the measured height of fluid in the tank.
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
SqRt Extraction 4-20mA Signal to Measurement Reading Converter
This tool will convert a sqrt 4-20 milliamp signal to a linear measurement over a specified measurement range and show a related conversion scale.
Measurement Reading to SqRt Extraction 4-20mA Signal Converter
This converter will convert any reading to a sq rt extraction 4-20mA signal. A sqrt 4-20mA conversion scale is also displayed for each measurement range.
Measurement Reading to 4-20mA Signal Converter
This tool converts linear measurement readings into a 4-20mA signal and displays a 4-20mA conversion scale for the corresponding measurement range.
4-20mA Signal to Measurement Reading Converter
This conversion tool will convert a 4-20mA electrical signal to the ideal reading for any linear measurement and display a conversion scale for each range.
mmH2O to mmHg Conversion Table
Choose a vacuum pressure in millimeters of water gauge from 1 to 10,000 mmWG to cross reference the converted pressure in millimeters of mercury.
psi to inHg Conversion Table
Find the corresponding value in inch of mercury pressure units for pounds per square inch values from 0.01 to 20.00 psi.
psi to mmHg Conversion Table
Select a pressure in 0.01psi increment from 0.01 to 20.00 psi to see the matching pressure measured in millimeters of mercury.
psi to mH2O Conversion Table
Scroll down to pick a psi value from 1 to 1000 to read off the water level in meters of water.
psi to inH2O Conversion Table
Scroll down to a pressure from 0.1 to 20.00 psi to see the matching reading in inches of water units.
psi to ftH2O Conversion Table
Look up a pressure from 1 to 1,000 pounds/sq in to read off the hydrostatic water level in feet.
bar to inH2O Conversion Table
Choose a value from 0.001 to 1.000 bar to read off the converted measurement in inches of water gauge pressure units.
bar to ftH2O Conversion Table
Use the list below to find the water height in feet for a pressure from 0.01 to 1000 bar.
Pa (pascals) to Torr Conversion Table
Pick out a value form 1 to 1000 pascals to read off the value in Torr.
Land Area & Machine Width & Speed to Coverage Time Calculator
This calculator will estimate the amount of time it will take a machine of a specified width and speed to completely process an area of land, t=A/wv
Pa (pascals) to psi Conversion Table
Use the table below to convert a pascal pressure reading from 100 to 100,000 Pa to determine the pressure in pounds/sq in.
MPa to ksi (kilopounds per square inch) Conversion Table
Use this list to convert from 1 to 1000 megapascals into kilopound per square inch units.
MPa to kg/cm² Conversion Table
Quickly find the equivalent value in kilogram/sqcm units using this conversion list from 1 to 1000 megapascals.
MPa to psi Conversion Table
Read off the pounds per square inch pressure value for a range of megapascal pressure readings from 1 to 1000 MPa.
kPa to Torr Conversion Table
Change any value from 1 to 1000 kilopascals into Torr using the conversion table below.
kPa to mmHg Conversion Table
Look up any pressure value from 1 to 1000 kilopascals to determine the same pressure in millimeters of mercury column units.
kPa to ftH2O Conversion Table
Find how deep a pressure in kilopascals will be when converted to a water depth in feet.
kPa to inH2O Conversion Table
Pick a value from 1 to 1000 kilopascals to see the converted value in water head inches.
kPa to mH2O Conversion Table
Look up a kilopascal value from 1 to 1000 to find the converted in value in metre height of water units.
kPa to psi Conversion Table
Select any pressure value from 1 to 1000 kPa to read off the corresponding converted value in pounds force per square inch.
kg/cm² to psi Conversion Table
Look up a pressure value from 1 to 1000 kg/sq cm to find the equivalent value in pounds/sq in.
kg/cm² to bar Conversion Table
Select a value from 1 to 1000 kg/sq cm to find the value in bar pressure units.
Pa (pascals) to mmHg Conversion Table
Look-up below any value from 1 to 1000 pascals to read off the equivalent value in millimetres of mercury.
Pa (pascals) to inH2O Conversion Table
Pick out the required pressure in pascals from 1 to 1000 Pa to find the converted value in inches of water column units.
Pa (pascals) to mmH2O Conversion Table
Choose the required air pressure value between 1 and 1,000 pascals and read off the matching pressure in millimetres of water.