How to use the pressure unit calculator
Convert between pascals, bar, atm, psi and mmHg. Enter pressure in the field above; the pascal, bar, psi, mmhg (torr) are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- p — Pressure (atm)
Worked example
With pressure = 1 atm, the calculator gives pascal ≈ 101,325 Pa; bar ≈ 1.01325 bar; psi ≈ 14.6959 psi; mmhg (torr) ≈ 760 mmHg.
Frequently asked questions
What is the formula for the pressure unit calculation?
Pascal (Pa) = p × 101325. Bar (bar) = p × 1.01325. psi (psi) = p × 14.6959. mmHg (torr) (mmHg) = p × 760. Here p is pressure (atm).
What inputs do I need for the pressure unit converter calculator?
You need pressure in atm. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.