inHg to atm converter
1 inHg = 0.0334211 atm
And 1 atm = 29.9213 inHg. Inches of mercury to standard atmosphere.
Formula
atm = inHg × 0.0334211
A reading of 15 inHg is 15 × 0.0334211 = 0.501316 atm.
inHg to atm table
| inHg | atm |
|---|---|
| 1 inHg | 0.0334211 atm |
| 5 inHg | 0.167105 atm |
| 10 inHg | 0.334211 atm |
| 15 inHg | 0.501316 atm |
| 30 inHg | 1.00263 atm |
| 50 inHg | 1.67105 atm |
| 100 inHg | 3.34211 atm |
| 500 inHg | 16.7105 atm |
| 1,000 inHg | 33.4211 atm |
atm to inHg table
| atm | inHg |
|---|---|
| 1 atm | 29.9213 inHg |
| 5 atm | 149.606 inHg |
| 10 atm | 299.213 inHg |
| 15 atm | 448.819 inHg |
| 30 atm | 897.638 inHg |
| 50 atm | 1,496.06 inHg |
About these units
inHg (inches of mercury): Barometric pressure in US aviation and weather reports.
atm (standard atmosphere): Defined as 101,325 Pa, roughly sea-level air pressure.
Gauge pressure (psig, barg) is measured relative to the surrounding atmosphere; absolute pressure (psia, bara) is relative to vacuum. Converting units never changes that reference: absolute = gauge + about 14.696 psi (1.01325 bar) at sea level. Stress uses the same units: 1 MPa = 1 N/mm².
Convert atm to inHg instead · All pressure and stress conversions