Inches of mercury to feet
Type a value in inHg to get it in ft instantly.
That's 1.87× as high as Denver, the “Mile High City”, while La Paz, Bolivia is 1.21× higher. Standard pressure there is 701 hPa (69.18 % of sea level), and water boils at 90.03 °C.
Convert the other way: ft to inHg
What it means
How high is that?
International Standard Atmosphere (ISO 2533), from −610 m to 20 km. Real pressure varies with weather by a few percent; temperature is the standard one, valid up to 11 km.
The math
How to convert inHg to ft
Up to 11 km: p = 1013.25 × (1 − 2.25577×10⁻⁵ × h)^5.25588 hPa; above, p falls exponentially at −56.5 °C. Boiling point by the Antoine equation for water.
Example: 20.7 inHg = 9,846.3 ft.
Every unit
That altitude in every unit
Tables
inHg to ft conversion table
| inHg | ft |
|---|---|
| 1.62 inHg | 65,574.8 ft |
| 3.56 inHg | 49,193.6 ft |
| 6.68 inHg | 36,099.3 ft |
| 7.81 inHg | 32,799.1 ft |
| 10.5 inHg | 26,273.9 ft |
| 13.9 inHg | 19,741 ft |
| 16 inHg | 16,330.5 ft |
| 18.2 inHg | 13,126.6 ft |
| 20.7 inHg | 9,846.3 ft |
| 22.1 inHg | 8,147.36 ft |
| 23.5 inHg | 6,533.46 ft |
| 25 inHg | 4,888.48 ft |
| 26.5 inHg | 3,321.57 ft |
| 28.2 inHg | 1,630.29 ft |
| 29 inHg | 862.83 ft |
| 29.9 inHg | 19.6607 ft |
ft to inHg conversion table
| ft | inHg |
|---|---|
| 0 ft | 29.9213 inHg |
| 820 ft | 29.0452 inHg |
| 1,640 ft | 28.19 inHg |
| 3,280 ft | 26.5408 inHg |
| 4,920 ft | 24.9705 inHg |
| 6,560 ft | 23.4764 inHg |
| 8,200 ft | 22.0555 inHg |
| 9,840 ft | 20.7051 inHg |
| 13,100 ft | 18.2192 inHg |
| 16,400 ft | 15.9548 inHg |
| 19,700 ft | 13.9238 inHg |
| 26,200 ft | 10.5343 inHg |
| 32,800 ft | 7.80967 inHg |
| 36,100 ft | 6.67979 inHg |
| 49,200 ft | 3.55891 inHg |
| 65,600 ft | 1.61804 inHg |
Quick answers
Quick answers
- How many ft is 10 inHg?
- 10 inHg is 27,375 ft.
- How many ft is 20.7 inHg?
- 20.7 inHg is 9,846.3 ft.
The units
About these units
Inches of mercury (inHg)
Air pressure in inches of mercury, as US altimeters are set.
Feet (ft)
Altitude in feet, as aviation uses.
Keep going