The torr is the vacuum physicist's pressure unit, named for Evangelista Torricelli, and it is defined with disarming simplicity: exactly 1/760 of a standard atmosphere. That makes 760 torr the same as 1 atm, 101,325 pascals, and — for all practical purposes — 760 mmHg, its mercury-column twin. Enter 760 in the Torr (Torr) box and the converter confirms the constellation: 101,325 Pascals (Pa), 101.325 Kilopascals (kPa), 1.01325 Bar, 14.6959 PSI, and exactly 1 Atmospheres (atm). The multiplication factors are 133.3224 per torr for pascals, 0.1333224 for kilopascals, 0.001333224 for bar, and 0.01933678 for PSI. Vacuum chambers, mass spectrometers, and semiconductor fab lines quote pressure in torr or its close cousin the millitorr (a thousandth of a torr), because atmospheric-scale units like PSI would need absurd strings of zeros. The one identity to carry: torr and mmHg agree to five decimal places, so converting between them is a no-op. Type any torr value into the box above and every companion unit — pascals, kilopascals, bar, PSI, atmospheres — updates instantly beside it.

With the pre-filled defaults — Torr (Torr) 760 — the Torr Converter returns Pascals (Pa) 101,325.02, Kilopascals (kPa) 101.3250, Bar 1.013250, PSI 14.6960, Atmospheres (atm) 1.000000. Change any input and those results update instantly, so you can see exactly how each number you enter moves the answer.