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Millimetres of mercury to standard atmospheres converter

Standard atmospheres (atm)0.001315789661

1 millimetre of mercury = 0.001315789661 standard atmospheres

How to convert millimetres of mercury to standard atmospheres

atm = mmHg × 0.00131578966114

Multiply the number of millimetres of mercury by 0.00131578966114 to get standard atmospheres. Going the other way, divide by 0.00131578966114 (or multiply by 759.999891726).

One millimetre of mercury is exactly defined as 0.00131578966114 standard atmospheres (to 12 significant figures), and one standard atmosphere is 759.999891726 millimetres of mercury.

Worked examples

  1. Convert 5 millimetres of mercury: 5 × 0.00131578966114 = 0.006578948306 0.006578948306 standard atmospheres.
  2. Convert 12.5 millimetres of mercury: 12.5 × 0.00131578966114 = 0.01644737076 0.01644737076 standard atmospheres.
  3. Convert 250 millimetres of mercury: 250 × 0.00131578966114 = 0.3289474153 0.3289474153 standard atmospheres.

Quick-reference table

mmHgatm
10.001315789661
20.002631579322
30.003947368983
50.006578948306
100.01315789661
150.01973684492
200.02631579322
250.03289474153
500.06578948306
750.09868422459
1000.1315789661
1,0001.315789661
atmmmHg
1759.9998917
21,519.999783
32,279.999675
53,799.999459
107,599.998917
1511,399.99838
2015,199.99783
2518,999.99729
5037,999.99459
7556,999.99188
10075,999.98917
1,000759,999.8917

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Frequently asked questions

How many standard atmospheres are in 1 millimetre of mercury?

1 millimetre of mercury equals 0.001315789661 standard atmospheres.

What is the formula to convert millimetres of mercury to standard atmospheres?

Use atm = mmHg × 0.00131578966114. Multiply the number of millimetres of mercury by 0.00131578966114 to get standard atmospheres. Going the other way, divide by 0.00131578966114 (or multiply by 759.999891726).

What is 100 millimetres of mercury in standard atmospheres?

100 millimetres of mercury is 0.1315789661 standard atmospheres.