At One Place

Standard atmospheres to inches of mercury

1 standard atmosphere in inches of mercury
1 atm = 29.92125 inHg
inHg = atm × 29.9212524

To convert standard atmospheres to inches of mercury, multiply by 29.9212524. The table below gives the values people look up most often, and the converter works for any number.

Standard atmospheres to inches of mercury table

Common standard atmosphere values converted to inches of mercury.
Standard atmospheres Inches of mercury
1 atm 29.92125
2 atm 59.8425
3 atm 89.76376
4 atm 119.685
5 atm 149.6063
10 atm 299.2125
15 atm 448.8188
20 atm 598.425
25 atm 748.0313
30 atm 897.6376
40 atm 1,196.8501
50 atm 1,496.0626
75 atm 2,244.0939
100 atm 2,992.1252
250 atm 7,480.3131
500 atm 14,960.626
1,000 atm 29,921.252

How the conversion works

The relationship is inHg = atm × 29.9212524. Both units measure pressure, so the conversion is a fixed factor that never changes.

Common questions

How many inches of mercury are in one standard atmosphere?
One standard atmosphere equals 29.92125 inches of mercury. inHg = atm × 29.9212524.
How do you convert standard atmospheres to inches of mercury?
Use inHg = atm × 29.9212524. So 10 atm is 299.2125 inHg.
How many standard atmospheres are in one inch of mercury?
One inch of mercury equals 0.033421 standard atmospheres, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked