Pressure Converter (PSI, Bar, kPa, Atmosphere & mmHg/Torr)

Convert tire, hydraulic, vacuum, and barometric pressure units.

Pressure in PSI (lb/in²)
31.908 psi
Kilopascals (kPa) 220 kPa
Standard Atmospheres (atm) 2.171 atm
Millimeters of Mercury (Torr) 1,650.136 mmHg
Inputs
bar
Pressure in bar (1 bar = 100 kPa).
atm
Atmospheric reference pressure in atm for absolute pressure.
Results & Graph
Pressure in PSI (lb/in²)
31.908 psi
Kilopascals (kPa)
220 kPa
Standard Atmospheres (atm)
2.171 atm
Millimeters of Mercury (Torr)
1,650.136 mmHg

Pressure in PSI (lb/in²)

Graph 1 • Bar Pressure Sensitivity Recalculates the domain equation across 50% to 150% of the primary input while holding other parameters constant.
0 psi 25.8 psi 51.7 psi 50%: 15.954 psi 16.0 50% 75%: 23.931 psi 23.9 75% 100%: 31.908 psi 31.9 100% 125%: 39.885 psi 39.9 125% 150%: 47.862 psi 47.9 150%
Graph 2 • Primary & Supporting Metric Comparison Compares the primary output alongside supporting domain benchmarks.
Pressure in PSI (lb/in²) 31.908 psi Kilopascals (kPa) 220 kPa Standard Atmospheres (atm) 2.171 atm Millimeters of Mercury (Torr) 1,650.136 mmHg
Graph 3 • Exact Output Table & Units Displays each calculated output in its exact domain unit.
Pressure in PSI (lb/in²)31.908 psiKilopascals (kPa)220 kPaStandard Atmospheres (atm)2.171 atmMillimeters of Mercury (Torr)1,650.136 mmHg
Summary: 2.2 bar equals 31.91 PSI, 220 kPa, 2.171 atm, and 1650.1 mmHg (Torr).
Summary: 2.2 bar equals 31.91 PSI, 220 kPa, 2.171 atm, and 1650.1 mmHg (Torr).

Formula & Mathematical Methodology: Pressure Units Conversion & Formula

kPa = bar × 100
PSI = bar × 14.50377
atm = bar / 1.01325
kPa = bar × 100; PSI = bar × 14.50377; atm = bar / 1.01325
  • barPressure: Bar Pressure (bar)
  • ambientAtm: Ambient Atm (atm)

Rounding: Exact NIST/BIPM conversion factors are used internally; displayed values round to 2–4 decimal places.

Worked Example: Reference Example: Pressure Units

Convert tire, hydraulic, vacuum, and barometric pressure units.

  1. Enter the source measurement or schedule parameter in the input field.
  2. Apply the exact conversion identity: kPa = bar × 100; PSI = bar × 14.50377; atm = bar / 1.01325.
  3. Compare all derived unit equivalents and visual scaling curves in the results panel.
Result: Computes Pressure Units via kPa = bar × 100; PSI = bar × 14.50377; atm = bar / 1.01325.

Frequently Asked Questions

What conversion standard does the Pressure Converter (PSI, Bar, kPa, Atmosphere & mmHg/Torr) use?

It applies kPa = bar × 100; PSI = bar × 14.50377; atm = bar / 1.01325 using NIST SP 811 and BIPM SI reference constants for exact, reproducible results.

Can I compare up to three scenarios at once?

Yes. Use the Compare button above the results to pin up to 3 different input configurations side by side.

Does this tool work offline or on mobile?

Yes. The entire calculation engine and 3-panel SVG graphing suite run locally in your mobile or desktop browser.

Unit Conversions • Thermodynamics Guide

How to Use the Pressure Converter (PSI, Bar, kPa, Atmosphere & mmHg/Torr): Practical Guide & Visual Analysis

Convert gauge or absolute fluid pressure between PSI, bar, kilopascals (kPa), standard atmospheres (atm), and Torr (mmHg). Features instant bidirectional unit scaling, textbook mathematical formulas, and three custom SVG visualizations. Whether you are researching pressure converter (psi, bar, kpa, atmosphere & mmhg/torr), pressure units, pressure bar psi pascal atm torr, thermodynamics calculator, this interactive tool helps you convert gauge or absolute fluid pressure between PSI, bar, kilopascals (kPa), standard atmospheres (atm), and Torr (mmHg).

Interpreting the 3 Custom Visual Graphs & Key Outputs

As you adjust Bar Pressure, Ambient Atm, the calculator immediately computes Primary converted or calculated value, Multi-scale reference equivalents, 3-Panel custom SVG visual comparison and updates all three domain-specific SVG charts in real time. Instead of relying on a single static figure, you can inspect the primary domain diagram, component breakdown, and multi-point trajectory curve to see how changing your inputs shifts the final result. Use the Compare (up to 3 scenarios) button to evaluate side-by-side variations before making a decision.

Real-World Benchmark & Planning Tips (NIST SP 811 / BIPM SI & Academic Reference Standard)

In our benchmark scenario (Reference Example: Pressure Units), Computes Pressure Units via kPa = bar × 100; PSI = bar × 14.50377; atm = bar / 1.01325. Keep in mind that uses exact international SI (BIPM) and NIST Special Publication 811 conversion factors. For related calculations in Unit Conversions, explore Unit Conversion Calculator, Date Difference & Business Days Calculator, GPA & Final Grade Calculator.