Pascal Conversion

Fluid Mechanics & SI Pressure Standards

The Pascal (Pa) is the official International System of Units (SI) unit of pressure, defined as one Newton of force per square meter.

Core Pressure Unit Conversion Factors

• Pascal to Kilopascal: 1 kPa = 1,000 Pa

• Pascal to Megapascal: 1 MPa = 1,000,000 Pa = 1,000 kPa

• Pascal to Bar: 1 bar = 100,000 Pa = 100 kPa

• Pascal to PSI: 1 psi = 6,894.757 Pa = 6.89476 kPa

• Pascal to Standard Atmosphere: 1 atm = 101,325 Pa = 101.325 kPa

• Pascal to mmHg / Torr: 1 mmHg = 133.32237 Pa

Common Industrial Pressure Ranges

• Standard Sea-Level Barometric Pressure: 101,325 Pa = 1.01325 bar = 14.696 psi.

• Passenger Automobile Tire Inflation: ≈ 220,000 - 240,000 Pa = 32 - 35 psi.

• Residential Municipal Water Line Pressure: ≈ 300,000 - 500,000 Pa = 40 - 75 psi.

Vacuum & Ultra-High Pressure Engineering

Vacuum systems in semiconductor manufacturing operate down to micro-Pascals (10^-6 Pa), whereas deep-sea oceanography and geological diamond presses encounter gigapascals (10^9 Pa).

How to Use This Calculator

Enter your Pressure Value (e.g. 100000) and From Pressure Unit — choose from Pascal (Pa), Kilopascal (kPa), Megapascal (MPa). Results update instantly as you type — adjust any value to compare scenarios.

The Formula

Formula Reference: Pascal Conversion

Input variables:

inputValue — Pressure Value

inputUnit — From Pressure Unit

Computed outputs:

pascalPa — Pascal (Pa)

kilopascalKpa — Kilopascal (kPa)

barVal — Bar

psiVal — Pounds per Square Inch (psi)

atmVal — Standard Atmosphere (atm)

Standard: NIST Handbook 44 and BIPM SI unit definitions

Worked Example

Converting 100,000 Pascals (Pa) of pneumatic pressure: Delivers 100.00 kPa, 1.0000 bar, 14.5038 psi, 0.9869 atm, and 750.06 mmHg.

Understanding Your Result

Unit conversions are exact by definition within a given measurement system (e.g., 1 km = exactly 1,000 m). Cross-system conversions (metric to imperial) use defined exchange factors: 1 inch = exactly 2.54 cm; 1 pound = 0.45359237 kg. Round your converted result to match the precision of your original measurement — expressing more decimal places than your input justifies implies false accuracy. For regulatory, legal, or safety-critical applications, verify which measurement system is required by the applicable standard.