Convert Psi to Pascals (Pa)
1 psi equals 6894.76 pascals.
Psi to Pascal Converter
How to Convert Psi to Pascal
1 psi = 6894.76 pascals
Pascal = Psi × 6894.76
Example: 1 psi × 6894.76 = 6894.76 Pa
Reverse Conversion
To convert pascals back to psi:
- Remember, 1 pascal equals 0.000145038 psi.
- To convert 6894.76 Pa to psi, multiply
6894.76 x 0.000145038, resulting in1 psi.
Psi to pascals Conversion Table
Reference table with common psi to pascals conversions. All values calculated with high precision.
Psi to Pascals Table
0.0001 to 12
Psi to Pascals Table
1 to 100000
Pascals to Psi Table
1 to 5000
Pascals to Psi Table
10000 to 1 × 109
Definition of Psi
PSI: Pound per Square Inch
PSI (pound-force per square inch or lbf/in²) is a unit of pressure commonly used in the United States and other countries that use imperial units. It measures the force in pounds applied to an area of one square inch. PSI is widely used for tire pressure, hydraulic systems, pneumatic tools, and various industrial applications.
Conversions to Other Units of Measurement:
- Bar: 1 psi equals approximately 0.0689476 bar. This conversion is essential for international equipment specifications. For example, 30 psi equals approximately 2.07 bar.
- Pascal (Pa): 1 psi equals approximately 6,894.76 pascals. This conversion connects imperial to SI units. For example, 14.7 psi (approximately 1 atm) equals about 101,325 Pa.
- Kilopascal (kPa): 1 psi equals approximately 6.89476 kPa. This is frequently used in automotive and engineering contexts. For example, a tire pressure of 32 psi equals approximately 220.6 kPa.
- Atmosphere (atm): 1 psi equals approximately 0.068046 atm. Standard atmospheric pressure (1 atm) equals approximately 14.696 psi.
- Kilogram-force per square centimeter (kgf/cm²): 1 psi equals approximately 0.070307 kgf/cm². This conversion is used in older metric equipment.
PSI remains the dominant pressure unit in North America for everyday applications like tire inflation, air compressors, and blood pressure (though medical uses mmHg).
- Definition
- Imperial/US customary pressure unit equal to one pound-force per square inch.
- Exact factor
- 1 psi = 6,894.757293168... Pa
- Common equivalents
- 1 psi ≈ 0.0689476 bar
- 1 psi ≈ 6.89476 kPa
- 14.696 psi ≈ 1 atm
- Sources
Definition of Pascal
Pascal: The SI Unit of Pressure
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square meter (N/m²). Named after the French mathematician and physicist Blaise Pascal, it is used extensively in scientific, engineering, and meteorological applications. The pascal is a relatively small unit, so larger multiples like kilopascal (kPa) and megapascal (MPa) are commonly used in practice.
Conversions to Other Units of Measurement:
- Bar: 1 pascal equals 0.00001 bar (or 1 bar = 100,000 Pa). This conversion is frequently used in industrial applications. For example, standard atmospheric pressure (101,325 Pa) equals approximately 1.01325 bar.
- PSI (Pound per Square Inch): 1 pascal equals approximately 0.000145038 psi. This conversion is essential for interfacing with equipment using imperial measurements. For example, 100,000 Pa equals approximately 14.5 psi.
- Atmosphere (atm): 1 pascal equals approximately 9.8692×10⁻⁶ atm. Standard atmospheric pressure is defined as exactly 101,325 Pa or 1 atm.
- Torr: 1 pascal equals approximately 0.00750062 torr. This conversion is commonly used in vacuum technology. For example, 133.322 Pa equals 1 torr.
- Millibar (mbar): 1 pascal equals 0.01 millibar. This conversion is frequently used in meteorology. For example, standard atmospheric pressure equals 1013.25 mbar.
The pascal is fundamental to pressure measurement, providing a standardized unit for scientific calculations and engineering specifications.
- Definition
- SI derived unit of pressure equal to one newton per square meter (N/m²).
- Exact factor
- 1 Pa = 1 N/m² = 1 kg/(m·s²) (exact)
- Common equivalents
- 1 Pa = 0.00001 bar (exact)
- 1 Pa = 0.01 mbar (exact)
- 1 Pa ≈ 0.000145038 psi
- Sources
About the Psi
Facts & Uses
- Pounds per square inch — the dominant pressure unit in US and UK engineering. 1 psi = 6894.757 Pa (derived from 1 lbf and 1 in², not exact in SI).
- Standard for US tire pressure (cars 30-35 psi, bicycles 60-100 psi), plumbing (40-80 psi household water), and compressed air tools.
- Common in gauge measurements: psig (gauge, relative to atmospheric) vs psia (absolute, including atmospheric pressure of 14.7 psi).
- Used in scuba diving in the US (3000 psi tanks), oil & gas industry, boiler ratings, and welding cylinders.
Curiosities
- 1 atm = 14.696 psi exactly — the value taught in US chemistry classes as the standard reference for sea-level pressure.
- The pressure inside a champagne bottle is 5-6 bar (75-90 psi) — about three times typical car tire pressure, which is why corks fly with such force.
- The deepest point in the Mariana Trench exerts about 16,000 psi (110 MPa) — over 1000 atmospheres.
- Approximate equivalents: 14.7 psi ≈ 1 atm ≈ 1.01 bar ≈ 101.3 kPa ≈ 760 mmHg.
Sources
About the Pascal
Facts & Uses
- SI derived unit of pressure: 1 Pa = 1 N/m². Named after Blaise Pascal (1623-1662), the French mathematician and physicist.
- Universal in scientific publications, weather data (hectopascals on barometric charts), and engineering specifications.
- The pascal is a very small unit for everyday pressures — atmospheric pressure is ~101,325 Pa, so weather forecasts use hectopascals (hPa) or kilopascals (kPa).
- Used in fluid mechanics, vacuum measurements, materials science (stress and strain), and tire pressure in metric markets.
Curiosities
- The pascal was adopted as the SI unit of pressure at the 14th CGPM in 1971, replacing the older mechanical units like dyne/cm² (CGS) and lbf/in² (imperial).
- 1 Pa is roughly the pressure exerted by a thin layer of paper resting on a tabletop — about 0.0000099 atmospheres.
- The millibar (mbar), traditionally used in meteorology, equals exactly 1 hPa (100 Pa). Most modern weather services have switched to hPa for SI compatibility.
- Approximate equivalents: 1 Pa ≈ 0.000145 psi; 1 atm = 101,325 Pa = 1013.25 hPa = 14.696 psi.
Sources
Frequently Asked Questions
How many pascals are in one psi?
One psi equals 6894.76 pascals. To convert, multiply the psi value by 6894.76. For the reverse, divide the pascal value by 6894.76 (or multiply by 0.000145038).
What is 1 psi in pascals?
1 psi = 6894.8 pascals. This is one of the most commonly searched conversions for this pair.
How precise is the psi-to-pascal conversion?
The factor 6894.76 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert Pascal to Psi
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