Convert atmospheres to torr and torr to atm instantly. Bidirectional pressure converter with formula and common values.
Multiply the atmosphere value by 760 to get torr. One standard atmosphere is defined as exactly 760 torr, based on the height of a mercury column at sea level.
| Atmospheres | Torr |
|---|---|
| 0.25 | 190 |
| 0.5 | 380 |
| 1 | 760 |
| 1.5 | 1,140 |
| 2 | 1,520 |
| 5 | 3,800 |
| 8 | 6,080 |
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One standard atmosphere equals exactly 760 torr. This definition comes from the mercury barometer where 760 mm of mercury equals atmospheric pressure.
Multiply the atmosphere value by 760. For example, 0.5 atm × 760 = 380 torr.
At sea level, atmospheric pressure supports a column of mercury exactly 760 mm tall. Torricelli measured this in 1644, and the torr was later named in his honor.
They are nearly identical. One torr is defined as 1/760 of an atmosphere. One mmHg is defined by mercury density. They differ by less than 0.000015%.