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Atmospheres to Torr Converter

Convert atmospheres to torr and torr to atm instantly. Bidirectional pressure converter with formula and common values.

atm

Torr

1,140

torr

1.5 atm = 1,140 torr

torr = atm × 760

Atmospheres to Torr: 1 atm equals 760 torr. To convert atmospheres to torr, multiply by 760 (torr = atm × 760). For example, 10 atm = 7600 torr.

How to Convert Atmospheres to Torr

To convert from atmospheres to torr, multiply the value by 760. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Atmospheres to Torr: torr = atm × 760
  • Torr to Atmospheres: atm = torr ÷ 760

Atmospheres to Torr Conversion Chart

Atmospheres (atm)Torr (torr)
0.176
0.25190
0.5380
1760
21520
32280
53800
107600
2015200
2519000
5038000
10076000
250190000
1000760000

Understanding the Units

What is an Atmosphere?

A standard atmosphere equals exactly 101,325 pascals — defined as the average atmospheric pressure at sea level.

Common contexts: chemistry, reference conditions.

What is a Torr?

One torr equals exactly 1/760 of a standard atmosphere, or about 133.322 pascals — close to one millimeter of mercury.

Named after Evangelista Torricelli (1608–1647), inventor of the barometer.

Common contexts: vacuum technology, medical blood pressure.

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FAQ

How many torr are in one atmosphere?

One standard atmosphere equals exactly 760 torr. This definition comes from the mercury barometer where 760 mm of mercury equals atmospheric pressure.

How do I convert atmospheres to torr?

Multiply the atmosphere value by 760. For example, 0.5 atm × 760 = 380 torr.

Why is 760 torr significant?

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.

What is the relationship between torr and mmHg?

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%.

How many torr are in 1 atmospher?

1 atm equals 760 torr.

How do you convert atmospheres to torr?

Multiply the atmospher value by 760. Formula: torr = atm × 760.

How many torr are in 5 atmospheres?

5 atm = 3800 torr.

How do you convert torr back to atmospheres?

Use the inverse formula: atm = torr ÷ 760. For example, 1 torr = 0.001316 atm.

What is the difference between Atmospher and Torr?

A standard atmosphere equals exactly 101,325 pascals — defined as the average atmospheric pressure at sea level. One torr equals exactly 1/760 of a standard atmosphere, or about 133.322 pascals — close to one millimeter of mercury.