Convert atmospheres to torr

1 atm=760Torr

Use the converter below to change any atmospheres value into torr instantly — with formula, conversion table, and real-world examples.

You have

Equals

760

Conversion formula

Forward

torr = atmospheres × 760

Reverse

atmospheres = torr × 0.001316

Example: 10 atm × 760 = 7,600 Torr.

About both units

From

Atmosphere

atm

The standard atmosphere equals 101,325 pascals exactly — defined by CGPM in 1954. Represents average sea-level atmospheric pressure. Used in chemistry, aviation and engineering as a reference pressure.

Real-world: Sea-level pressure: 1 atm. Mount Everest summit: ~0.33 atm. Submarine at 100 m: ~11 atm.

Read full atmosphere reference →

Torr

The torr equals 1/760 atm — approximately 133.32 Pa. Essentially equivalent to mmHg but defined slightly differently. Used in vacuum-system engineering and older physics.

Real-world: Low-vacuum: 760 to 25 torr. High-vacuum: 10⁻³ to 10⁻⁹ torr. Semiconductor fabrication: often below 10⁻⁶ torr.

Read full torr reference →

Atmosphere to Torr conversion table

Common atmospheres to torr values for quick reference.

Atmosphere (atm)	Torr (Torr)
1 atm	760 Torr
5 atm	3,800 Torr
10 atm	7,600 Torr
25 atm	19,000 Torr
50 atm	38,000 Torr
100 atm	76,000 Torr
200 atm	152,000 Torr
500 atm	380,000 Torr
1,000 atm	760,000 Torr
5,000 atm	3,800,000 Torr

Tips & common mistakes

Quick tips

1 atm = 101,325 Pa = 1.01325 bar = 14.696 psi.
Note: atm ≠ bar. Close but not identical.
Modern SI prefers pascals; atm is a legacy reference.

Avoid these

Using 1 atm = 1 bar exactly — off by 1.3%.
Confusing standard atm with technical atmosphere (98,066.5 Pa) or atmosphere-absolute in diving.
Applying 1 atm outside sea level without correction.

Frequently asked questions

How many torr in a atmosphere?

One atmosphere equals 760 torr.

How do I convert atmospheres to torr?

Multiply the atmosphere value by 760 to get the equivalent in torr.

What is 100 atmospheres in torr?

100 atmospheres equals 76,000 torr.

Is a atmosphere bigger than a torr?

Yes. 1 atmosphere equals 760 torr, so one atmosphere is larger.

How to convert atmospheres to torr without a calculator?

Multiply by 760 for a quick estimate; use a calculator for precise results.

Related pressure conversions

📊 See full comparison matrix →

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