Pressure Calculators
Browse our comprehensive collection of pressure calculators for PSI, kPa, atm, bar, mmHg, hydrostatic pressure, gas laws, manometers, and more. Free online tools for engineers, students, and professionals.
PSI to kPa Converter
Convert pounds per square inch (PSI) to kilopascals (kPa) with step-by-step formula.
conversionkPa to PSI Converter
Convert kilopascals (kPa) to pounds per square inch (PSI) with detailed steps.
conversionAtm to kPa Converter
Convert standard atmospheres (atm) to kilopascals (kPa) using exact conversion factor.
conversionBar to PSI Converter
Convert bar to pounds per square inch (PSI) with multiplication by 14.5038.
conversionPSI to Bar Converter
Convert pounds per square inch (PSI) to bars with step-by-step formula.
conversionmmHg to kPa Converter
Convert millimeters of mercury (mmHg) to kilopascals (kPa) using 1 mmHg = 0.133322 kPa.
conversionkPa to mmHg Converter
Convert kilopascals (kPa) to millimeters of mercury (mmHg) using 1 kPa = 7.50062 mmHg.
conversioninHg to kPa Converter
Convert inches of mercury (inHg) to kilopascals (kPa) with exact factor.
conversionKilo Pascal to PSI Converter
Convert kilopascals (kPa) to pounds per square inch (PSI) with formula (1 PSI = 6894.76 Pa).
conversionPascal to PSI Converter
Convert pascals (Pa) to pounds per square inch (PSI) with formula (1 PSI = 6894.76 Pa).
conversionHydrostatic Pressure Calculator
Calculate pressure at depth in a fluid using P = ฯgh with density and depth.
hydrostaticHead Pressure Calculator
Convert pressure head (feet or meters of fluid) to pressure (psi, kPa, etc.).
hydrostaticIdeal Gas Law Calculator (PV = nRT)
Calculate pressure, volume, temperature, or moles using the ideal gas law.
gasBoyle's Law (PโVโ = PโVโ)
Calculate pressure or volume changes at constant temperature.
gasGay-Lussac's Law (Pโ/Tโ = Pโ/Tโ)
Calculate pressure or temperature changes at constant volume.
gasCombined Gas Law
Solve combined gas law problems (PโVโ/Tโ = PโVโ/Tโ) with all variables.
gasGas Density Calculator
Calculate gas density from pressure, temperature, and molar mass.
gasCompressibility Factor Calculator
Estimate compressibility factor for real gases from reduced pressure and temperature.
gasDensity Altitude Calculator
Calculate density altitude from pressure altitude and temperature.
atmosphericPressure Altitude Converter
Convert between pressure altitude and actual elevation using standard atmosphere model.
atmosphericAir Density Calculator
Calculate air density from temperature, pressure, and humidity.
atmosphericU-Tube Manometer Calculator
Calculate pressure difference from U-tube manometer height difference and fluid density.
manometerPipe Burst Pressure Calculator
Calculate burst pressure of pipe or tube from wall thickness and material strength.
engineeringPump Discharge Pressure Calculator
Calculate pump discharge pressure from suction pressure and pump head.
engineeringVacuum Pressure Converter
Convert vacuum pressure between torr, mbar, Pa, and inHg.
vacuumBlood Pressure Converter
Convert blood pressure readings between mmHg and kPa.
biologicalOsmotic Pressure Calculator
Calculate osmotic pressure of solutions using van't Hoff equation.
biologicalWhat Are Pressure Calculators?
Our Pressure Calculators collection provides a comprehensive suite of tools for converting pressure units and solving pressure-related problems in physics, engineering, meteorology, and medicine. Whether you need to convert between PSI and kPa, calculate hydrostatic pressure, analyze gas laws, or design pressure vessels, these calculators deliver accurate results with clear step-by-step explanations.
From pressure unit conversion and hydrostatic pressure to gas laws, atmospheric pressure, manometer readings, vacuum calculations, and medical pressure conversions, our tools cover the full spectrum of pressure measurement and analysis.
How to Use This Directory
- Search: Type a keyword into the search bar to find specific converters by name or description.
- Filter by Category: Use the dropdown to narrow down to a specific pressure topic โ each option shows the number of tools available.
- Click to Use: Each card links directly to the converter. Click on any card to start your pressure calculation instantly.
- Explore Category Pages: Use the "Explore More Conversion & Engineering Calculators" section to access dedicated pages for other unit types.
Why Use Our Pressure Calculators?
- Comprehensive Coverage: Covers pressure conversion, hydrostatic pressure, gas laws, atmospheric pressure, manometers, engineering applications, vacuum systems, and biological/medical uses.
- Accurate & Reliable: Uses exact conversion factors and validated formulas.
- Free & Accessible: No registration, no fees โ use any tool instantly on any device.
- Educational: Many tools show the formulas and principles behind the calculations.
- Professional & Personal Use: Designed for engineers, scientists, medical professionals, students, and hobbyists.
โ Pressure Calculators FAQ
What types of pressure conversions can I perform?
You can convert between PSI, kPa, atm, bar, mmHg (torr), inHg, Pascal (Pa), MPa, and many other units. The universal converter handles all common pressure units.
How do I convert PSI to kPa?
Use our PSI to kPa Converter. Enter the value in PSI and the tool will multiply by 6.89476 to get kPa, with step-by-step work shown.
How do I calculate hydrostatic pressure at a certain depth?
Use our Hydrostatic Pressure Calculator. Enter the fluid density and depth, and the tool will compute pressure using P = ฯgh.
What is the difference between gauge and absolute pressure?
Gauge pressure is measured relative to atmospheric pressure, while absolute pressure includes atmospheric pressure. Our Gauge to Absolute Pressure Converter handles the conversion.
How do I calculate pressure from a manometer reading?
Use our U-Tube Manometer Calculator. Enter the height difference and fluid density, and the tool will calculate the pressure difference.
How do I calculate atmospheric pressure at altitude?
Use our Atmospheric Pressure at Altitude calculator. Enter elevation and temperature, and the tool will compute pressure using the barometric formula.
How do I convert blood pressure between mmHg and kPa?
Use our Blood Pressure Converter. Enter the systolic and diastolic values in mmHg or kPa and get the equivalent in the other unit.
Are these calculators suitable for professional engineering?
Yes, our calculators use accurate formulas and standards (ASME, ISO) and are suitable for engineering design, analysis, and education.
How often are new pressure calculators added?
We regularly add new calculators based on user requests. If you have a suggestion, please contact us.
Can I use these calculators for scientific research?
Yes, our calculators use validated physical and chemical formulas, making them suitable for academic and research purposes.