Torr to Atm Converter

Convert pressure between torr and standard atmospheres (atm) using the exact relationship of 1 atm = 760 Torr. Torr is commonly used in vacuum science and is nearly equivalent to millimeters of mercury (mmHg). For PSI conversions, try our PSI to ATM Converter.

Conversion formula

Atmospheres = Torr / 760. To convert atm to Torr, multiply by 760. This relationship comes from the definition of the standard atmosphere in terms of mercury column height.

Related tools

See also Pressure Converter and MPa Converter for broader pressure unit options.

Frequently Asked Questions

How many torr are in 1 atm?

One standard atmosphere equals exactly 760 torr.

Is torr the same as mmHg?

For most practical purposes, yes. 1 Torr is approximately equal to 1 mmHg.

How do I convert 800 torr to atm?

Divide by 760: 800 / 760 = 1.0526 atm.

Can I convert atm back to torr?

Yes. Switch the conversion direction and multiply atm by 760.

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Torr to Atm Converter