Pressure Conversion - Free Online Pressure Converter Tool
Convert between different pressure units including metric, imperial, scientific, and meteorological measurements
Understanding pressure conversion is essential in science, engineering, healthcare, and daily tasks like checking tire pressure. Different countries and industries use different pressure units, which makes a reliable conversion tool important.
Our Pressure Converter helps you quickly change values between units like kPa, PSI, bar, atm, pascal, torr, and mmHg with instant and accurate results.
Why Use a Pressure Conversion Tool?
- Accuracy: Built with the correct formulas for each pressure unit.
- Speed: Get results instantly, no manual calculation required.
- Flexibility: Convert between multiple pressure units in one place.
- Ease of use: Simple input with clear results.
- Everyday use: Works on mobile and desktop for quick checks anywhere.
How to Use Our Pressure Converter
- Enter your pressure value.
- Select the input unit (PSI, kPa, bar, etc.).
- Choose the target unit.
- Get the converted value instantly.
Common Pressure Units
Pascal (Pa)
The pascal is the SI unit of pressure. One pascal equals one newton per square meter. It is widely used in physics and engineering.
- 1 Pa = 1 N/m²
- Smallest unit in daily conversions
- Common in fluid mechanics and material science
Kilopascal (kPa)
A kilopascal equals 1,000 pascals. It is often used in weather forecasts, tire pressure, and building codes.
- 1 kPa = 0.145038 PSI
- Common in Canada, Australia, and metric-based countries
Pounds per Square Inch (PSI)
PSI is the imperial pressure unit. It represents one pound of force applied to one square inch.
- 1 PSI = 6.89476 kPa
- Widely used in the United States
- Common for tire pressure, hydraulics, and gas systems
Bar
The bar is a convenient metric unit often used in Europe.
- 1 bar = 100 kPa = 14.5038 PSI
- Common in diving, meteorology, and industrial gauges
Atmosphere (atm)
Atmosphere is based on the average air pressure at sea level.
- 1 atm = 101.325 kPa
- Used in chemistry, physics, and aviation
Torr and mmHg
Torr and millimeters of mercury (mmHg) are nearly the same and are common in medical and laboratory use.
- 1 atm = 760 mmHg = 760 torr
- Common in blood pressure readings
Pressure Conversion Formulas
- kPa to PSI: PSI = kPa × 0.145038
- PSI to kPa: kPa = PSI × 6.89476
- Bar to kPa: kPa = Bar × 100
- Atm to kPa: kPa = Atm × 101.325
- mmHg to kPa: kPa = mmHg × 0.133322
Examples of Pressure Conversion
Example 1: 200 kPa to PSI
Formula: PSI = kPa × 0.145038
= 200 × 0.145038
Result= 29.01 PSI
Example 2: 30 PSI to kPa
Formula: kPa = PSI × 6.89476
= 30 × 6.89476
Result = 206.84 kPa
Example 3: 1 atm to bar
Formula: Bar = atm × 1.01325
= 1 × 1.01325
Result = 1.01325 bar
Applications of Pressure Conversion
- Tire Pressure: Drivers use PSI, while manuals often list kPa.
- Hydraulic Systems: Engineers need quick conversions between bar and PSI.
- Aviation: Pilots monitor cabin pressure in atm and kPa.
- Medical Use: Blood pressure is measured in mmHg but sometimes compared in kPa.
- Weather Science: Meteorologists report atmospheric pressure in kPa or bar.
Quick Reference Table for Pressure Conversion
Unit | Equivalent Values |
1 atm | 101.325 kPa = 14.70 PSI = 760 mmHg |
1 bar | 100 kPa = 14.50 PSI |
1 PSI | 6.89476 kPa = 0.068 atm |
1 kPa | 0.145 PSI = 0.00987 atm |
Use our Pressure Conversion Calculator at Digital Calculator for fast, reliable, and precise results in science, healthcare, engineering, and everyday applications.