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  5. Pressure Converter
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  7. Convert atm to torr

Convert atm to torr

Convert Standard atmosphere (atm) to Torr (Torr) instantly.

Calculation

value × 760

Quick ConversionConverted
1 atm760 Torr
5 atm3,800 Torr
10 atm7,600 Torr
100 atm76,000 Torr
1,000 atm760,000 Torr

Standard atmosphere

A standard atmosphere is a pressure unit defined as exactly 101,325 pascals.

The atmosphere unit became useful as a reference for average sea-level air pressure in science and education.

atm is used in chemistry, gas laws, diving references, laboratory work, classroom problems, and pressure comparisons.

Torr

A torr is a pressure unit defined as 1/760 of a standard atmosphere.

Torr is named after Evangelista Torricelli and remains associated with mercury-column and vacuum pressure measurement.

Torr is used in vacuum systems, laboratories, physics, chemistry, pressure gauges, and low-pressure process documentation.

How to Convert Standard atmosphere to Torr

Mathematically, torr (Torr) = standard atmosphere (atm) converted with the formula below.

1 atm = 760 Torr

1 Torr = 0.001316 atm

Formula: value × 760

Example: 15 atm = 11,400 Torr

  1. Start with the pressure value in atm.
  2. Use 760 Torr for each standard atmosphere.
  3. Multiply the atm value by 760.
  4. Use Torr as the converted result.

Precision note: Use exactly 760 Torr per atm. Preserve decimals when converting fractional atmosphere values.

How many atm in Torr and Torr in atm

1 atm = 760 Torr

1 Torr = 0.001316 atm

Standard atmosphere [atm]Torr [Torr]
0.01 atm7.6 Torr
0.1 atm76 Torr
1 atm760 Torr
2 atm1,520 Torr
5 atm3,800 Torr
10 atm7,600 Torr
20 atm15,200 Torr
50 atm38,000 Torr
100 atm76,000 Torr

Common Use Cases for atm to Torr

  • Converting gas-law pressures from atm into Torr.
  • Preparing chemistry, physics, or lab examples in Torr.
  • Comparing standard atmosphere values with vacuum or mercury-column references.
  • Checking pressure values in documents that use atm and Torr together.

FAQ

How many Torr are in one atm?

One standard atmosphere contains exactly 760 Torr.

How many Torr is 0.25 atm?

0.25 atm equals 190 Torr.

Why is this conversion exact?

Torr is defined as 1/760 of a standard atmosphere.

More Standard atmosphere conversions

  • atm to pa
  • atm to kpa
  • atm to mpa
  • atm to bar
  • atm to psi