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Pressure Unit Conversions

Convert between different units of pressure - pascal, psi, kilopascal, atmosphere, torr, bar, hectopascal,mmHg, mmh2o

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Pressure Studio

METRIC / SI STANDARDS

PA
KPA
HPA

IMPERIAL / US STANDARDS

PSI
MMHG
MMH2O

ATMOSPHERIC STANDARDS

BAR
ATM
MB
Quick Benchmarks:

Pressure Formula

Pressure (P) = Force (F) / Area (A)

1 Pascal is defined as 1 Newton per square meter.

Conversion Reference Table

psiPascal (Pa)KiloPascal (kPa)BarAtmosphere (atm)
0.1689.480.68950.0068950.006805
0.53447.383.44740.0344740.034023
16894.766.89480.0689470.068046
534473.8034.47380.3447370.340231
1068947.6068.94760.6894740.680462
15103421.40103.42141.0342121.020693
20137895.20137.89521.3789491.360924
50344738.00344.73803.4473723.402309
100689476.00689.47606.8947456.804619

Overview & Capabilities

Convert between different units of pressure - pascal, psi, kilopascal, atmosphere, torr, bar, hectopascal,mmHg, mmh2o

Tutorial

How to Use

01
Enter a value in any field to see conversions in all other units.
02
Refer to the Reference Table for common pressure benchmarks.
Capabilities

Key Features

Multi-Unit Support: Convert between psi, pascal, bar, atmosphere, torr, and more.
High Precision: Accurate calculations for engineering and scientific use.
Bidirectional Logic: All fields are interactive and calculate in both directions.
Applications

Common Use Cases

Automotive Care: Converting recommended tire pressure from PSI to bar.
Scientific Labs: Converting standard gas pressure to pascals (Pa) or atmospheres.
Weather & Barometrics: Converting millibars (mb) to hPa for weather tracking.
Scuba Diving: Tracking cylinder pressure and depth atmospheric ratios.
Guidance

Tips & Best Practices

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Standard atmospheric pressure at sea level is 1 atm, 1.01325 bar, or 14.696 psi.
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A pascal is a very small unit; most air pressure readings are in kiloPascals (kPa).
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1 bar is exactly equal to 100,000 pascals (Pa).
Answers

Frequently Asked Questions

Q Which is the largest unit of Pressure?

The Atmosphere (atm) is the largest unit of pressure among common ones. It is 1.01 times of bar and roughly 100,000 times of Pascal.

Q Which is bigger Bar or KiloPascal?

Bar is bigger than Kilopascal. 1 Bar = 100 kPa.

Q Which is the smallest unit of Pressure?

Pascal (Pa) is the smallest unit of pressure. It is equal to the force of 1 newton acting on an area of 1 square meter.

Q What is normal atmospheric pressure?

Normal atmospheric pressure at sea level is defined as 1 atmosphere (atm), which is approx 14.7 psi or 1013.25 mbar.

Q Why do we measure tire pressure in PSI?

Pounds per square inch (PSI) is the standard unit in the imperial system, commonly used in the US and UK for automotive applications.

Q What unit do meteorologists use for weather?

Meteorologists typically use millibars (mb) or hectopascals (hPa) for atmospheric pressure. They are equivalent (1 mb = 1 hPa).