Convert Atmosphere to Inch of Mercury
Convert atmospheres to inhg by entering a value below.
How to Convert Atmospheres to inHg
The atmosphere and inch of mercury are both units of pressure. 1 atmosphere equals 29.921252402 inhg. This means to convert atmospheres to inhg, you multiply by 29.921252402.
Formula
Step-by-Step Example
Convert 5 atm to inhg:
We need to convert atmospheres to inhg
Since 1 atm = 29.921252402 inHg, multiply by 29.921252402
5 × 29.921252402 = 149.60626201
5 atm = 149.60626201 inHg
Atmosphere to Inch of Mercury Conversion Table
Quick reference table for common atmosphere to inch of mercury conversions. Click any value for detailed calculation.
| Atmospheres (atm) | inHg (inHg) |
|---|---|
| 1 atm | 29.921252402 inHg |
| 2 atm | 59.842504804 inHg |
| 5 atm | 149.60626201 inHg |
| 10 atm | 299.21252402 inHg |
| 15 atm | 448.81878603 inHg |
| 20 atm | 598.42504804 inHg |
| 25 atm | 748.03131005 inHg |
| 50 atm | 1496.0626201 inHg |
| 100 atm | 2992.1252402 inHg |
About These Units
Atmosphere (atm)
One standard atmosphere (atm) equals 101,325 Pascals, 1.01325 bar, or 14.696 PSI—the average air pressure at sea level. Atmospheres measure diving depth (every 10 meters adds ~1 atm), altitude effects, and chemical reactions. Used as a reference pressure in science.
Inch of Mercury (inHg)
Inches of mercury (inHg) measure atmospheric pressure in US aviation and weather reports. Standard sea level pressure is 29.92 inHg. Altimeter settings use inHg. One inHg equals 25.4 mmHg or approximately 33.86 millibars.
Frequently Asked Questions
How do I convert atmospheres to inhg?
To convert atmospheres to inhg, multiply the value by 29.921252402. For example, 10 atm = 299.21252402 inHg.
How many inhg are in 1 atmosphere?
1 atmosphere equals 29.921252402 inhg.
What is the formula for atmospheres to inhg?
The formula is: inHg = atm × 29.921252402.