Pressure Converter
Convert pascal, kPa, MPa, bar, atm, psi, Torr and inHg.
Quick answer
- Formula: Result = Value × (factor of from-unit in Pa) ÷ (factor of to-unit in Pa)
- Worked example — Converted pressure: 14.695949 (full example below).
Pressure Converter
| Converted pressure | 14.695949 |
| Summary | 1 atm = 14.695949 psi |
Standard atmospheric pressure is 14.696 psi — the sea-level air pressure pressing on everything.
Convert pressure through the pascal, the SI unit. Standard atmospheric pressure anchors the scale: 1 atm = 101,325 Pa exactly = 1.01325 bar. One bar is exactly 100,000 Pa, one psi is 6894.757293168 Pa, and one Torr (1 mmHg) is 133.322387415 Pa.
Everyday anchors: car tyres run about 32 psi (220 kPa), sea-level air pressure is about 14.7 psi, and blood pressure is still measured in mmHg (Torr).
The formula
Worked example
Standard atmospheric pressure is 14.696 psi — the sea-level air pressure pressing on everything.
The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.
Frequently asked questions
How many psi are in a bar?
About 14.5038 psi per bar. Tyre pressures quoted as 2.2 bar in Europe are about 32 psi.
Are Torr and mmHg the same?
For practical purposes yes: 1 Torr is defined as exactly 1/760 of an atmosphere, which equals 133.322387415 Pa — within a hair of the conventional mmHg value used here.
What is normal air pressure in inHg?
29.92 inHg at sea level in standard conditions — the reference setting pilots use for altimeters.
Category: Unit Conversions calculators
Sources & methodology
This calculator applies the formula shown on this page exactly as written, using the standard definitions for its inputs. Results are computed from the values you enter — no data is stored — and are rounded only for display.
Content last reviewed by CalcHub Editorial.
Embed this calculator on your site
Free to use with attribution — paste the snippet below and the calculator appears on your page, with a link back to CalcHub.
