Pressure Converter — PSI, Bar, kPa, ATM & mmHg

Convert PSI ⇄ bar ⇄ kPa ⇄ atm ⇄ mmHg instantly — tyres, diving, weather and lab work.

Quick answer: Free pressure converter: PSI to bar, kPa, atmospheres, mmHg/Torr, mbar — exact factors, instant, offline.

Value

→

–result

How to use

Enter the pressure value.
Pick the units.
Live result — round as your gauge does.

About this tool

Tyre gauges say PSI, European manuals say bar, weather maps say hPa, blood pressure says mmHg. One tool, exact factors (1 bar = 100,000 Pa; 1 atm = 101,325 Pa), live conversion.

FAQ

What PSI is 2.2 bar?

2.2 × 14.5038 = 31.9 PSI — type it and see, car-tyre accurate.

mmHg vs Torr?

Practically identical (0.017 ppm apart) — both included.

Weather hPa?

hPa = mbar exactly; 1013 hPa = standard sea-level pressure.

Diving?

1 atm per 10 m of seawater is the dive-school rule; convert gauge readings exactly here.

Offline?

Yes.

Which for bike tyres?

Road bikes ~5–8 bar (70–115 PSI) — convert your gauge's scale here.

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Your rating stays in this browser (local storage) — nothing is sent to any server.

Prefer the long version — a worked example, the mistakes people actually make, and answers to real questions? The blog guide Pressure Converter — Complete Guide, Mistakes & FAQ covers all of it step by step.

Browse the collection: Calculators — All 96 Free Online Tools

Pressure Converter — PSI, Bar, kPa, ATM & mmHg

How to use

About this tool

FAQ

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