mmHg to inHg converter
1 mmHg = 0.0393701 inHg
And 1 inHg = 25.4 mmHg. Millimetres of mercury to inches of mercury.
Formula
inHg = mmHg × 0.0393701
A reading of 15 mmHg is 15 × 0.0393701 = 0.590551 inHg.
mmHg to inHg table
| mmHg | inHg |
|---|---|
| 1 mmHg | 0.0393701 inHg |
| 5 mmHg | 0.19685 inHg |
| 10 mmHg | 0.393701 inHg |
| 15 mmHg | 0.590551 inHg |
| 30 mmHg | 1.1811 inHg |
| 50 mmHg | 1.9685 inHg |
| 100 mmHg | 3.93701 inHg |
| 500 mmHg | 19.685 inHg |
| 1,000 mmHg | 39.3701 inHg |
inHg to mmHg table
| inHg | mmHg |
|---|---|
| 1 inHg | 25.4 mmHg |
| 5 inHg | 127 mmHg |
| 10 inHg | 254 mmHg |
| 15 inHg | 381 mmHg |
| 30 inHg | 762 mmHg |
| 50 inHg | 1,270 mmHg |
About these units
mmHg (millimetres of mercury): Blood pressure and vacuum gauges, using the conventional 13.5951 g/cm³ mercury.
inHg (inches of mercury): Barometric pressure in US aviation and weather reports.
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 inHg to mmHg instead · All pressure and stress conversions