Pressure Converter

Convert between PSI, bar, Pascal, kPa, mmHg, atm, and more pressure units with instant results and mobile-friendly design.

  • PSI ↔ Bar
  • Pascal ↔ kPa
  • mmHg ↔ atm
  • Copy and Share

Pressure Converter Form

Enter a numeric value, select the starting unit, choose the target unit, then view the live conversion with supporting breakdown.

Result

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Enter a pressure value to see the conversion.

Understanding pressure measurement systems

Pressure measures force applied per unit area. Different industries use various units to express pressure, each suited for specific applications.

Common pressure units and their uses

Pascal serves as the standard SI unit for pressure. One pascal equals one newton per square meter. Scientists and engineers use pascals for calculations involving force and area relationships.

Visual comparison of pressure unit relationships
1 Pa1 N/m²Pascal
1 Bar100,000 PaBar
1 PSI6,895 PaPSI

Kilopascal provides a practical unit for everyday measurements. One kilopascal equals 1,000 pascals. Weather reports and industrial applications commonly use kilopascals for readability.

PSI to Bar
PSI ÷ 14.5 = Bar
Example: 29 PSI ÷ 14.5 = 2 bar
Bar to Pascal
Bar × 100,000 = Pascal
Example: 1 bar × 100,000 = 100,000 Pa

Bar represents atmospheric pressure at sea level. One bar equals 100,000 pascals. Meteorology, scuba diving, and European engineering applications prefer bar measurements.

PSI measures pounds per square inch. This imperial unit appears in tire pressure specifications, hydraulic systems, and American industrial applications. One PSI equals approximately 6,895 pascals.

Atmosphere represents average sea-level atmospheric pressure. One atmosphere equals 101,325 pascals. Chemistry, physics, and aviation use atmospheres for altitude calculations.

Millibar divides bar into thousandths. One millibar equals 100 pascals. Meteorology and weather forecasting rely on millibars for atmospheric pressure readings.

Millimeters of mercury measure pressure using mercury column height. Medical applications use mmHg for blood pressure measurements. One mmHg equals approximately 133 pascals.

Torr units honor Evangelista Torricelli, barometer inventor. Vacuum technology and scientific applications use torr. One torr equals one mmHg.

Pressure applications across industries

Automotive maintenance requires converting tire pressure between PSI and bar. Vehicle manuals specify pressure in different units depending on region. This converter helps maintain optimal tire pressure for safety and performance.

Meteorology tracks atmospheric pressure changes using bar and millibar units. Weather forecasting depends on accurate pressure measurements. Converting between units helps meteorologists communicate conditions clearly.

Engineering designs pressure vessels and hydraulic systems using various units. Structural calculations require precise pressure conversions. This tool supports design workflows across measurement systems.

Medical professionals measure blood pressure in mmHg. Understanding conversions helps when working with international equipment or research data. Accurate pressure measurements support patient care decisions.

Aviation calculates cabin pressure and altitude relationships using atmospheres. Flight safety systems monitor pressure changes. Converting between units ensures accurate altitude readings.

Industrial processes control pressure in manufacturing systems. Quality assurance depends on precise pressure measurements. Converting units supports process control and safety standards.

Scuba diving uses bar for tank pressure measurements. Divers need accurate pressure readings for safe underwater activities. Converting between units helps when using equipment from different regions.

Conversion principles and accuracy

Pressure conversions use multiplication factors based on unit relationships. Converting between any two units requires knowing the conversion factor. This tool applies factors automatically for instant results.

Key conversion factors at a glance
PSI → Bar
÷ 14.5
Bar → Pascal
× 100,000
mmHg → Pascal
× 133.322
Atmosphere → Pascal
× 101,325

Precision matters in pressure conversions. Rounding errors affect calculations in critical applications. This converter maintains high precision throughout conversions.

Understanding conversion factors helps verify results. For example, PSI to bar uses division by 14.5. Bar to pascal uses multiplication by 100,000. These relationships appear in the conversion breakdown.

Pressure converter FAQs

How do I convert PSI to bar quickly?

Divide the PSI value by 14.5. The converter applies this ratio instantly and returns a clean decimal for your notes.

Which pressure units appear in this tool?

Pascal, kilopascal, bar, PSI, atmosphere, torr, mmHg, inHg, and millibar are available. Select any combination to see live results with supporting context.

How do I copy results for reports?

Press Copy Result to move the equation and the full unit breakdown to your clipboard. Paste the output into documents, slide decks, or engineering notes.

How do I switch between units without retyping?

Use Swap Units to flip the menus instantly. The field recalculates and keeps the same value so your workflow stays focused.

What is standard atmospheric pressure in different units?

Standard atmospheric pressure at sea level equals 101,325 pascals, 101.325 kilopascals, 1.01325 bar, 14.696 PSI, 1 atmosphere, 760 mmHg, or 29.92 inHg.

Why does the tool show every unit at once?

The breakdown lists each supported pressure unit so your main result keeps context. This layout keeps cross-checking simple during quality reviews.

How accurate is this pressure converter?

This converter uses precise conversion factors based on international standards. Accuracy suits most professional applications including engineering, medical, and scientific calculations.