inHg to Atmosphere Converter
Pressure · unit-converter
Convert inHg to Atmosphere with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About inHg
Inches of mercury (inHg) is used in aviation altimetry and vacuum readings in some US contexts.
About Atmosphere
The standard atmosphere (atm) is defined as exactly 101,325 Pa. It links legacy chemistry and physics problems to SI.
How to convert inch of mercury (inhg) to atmosphere
1 inhg equals 0.0334210526315322 atmosphere in this tool (via pascal):
1 inhg = (3386.38815789 Pa ÷ 101325 Pa) atm = 0.0334210526315322 atm
Each inhg carries 3386.38815789 Pa and each atmosphere 101325 Pa, so one inhg equals 3386.38815789 ÷ 101325 atm.
Let p(inhg) be pressure in inHg (inhg), and p(atm) in Atmosphere (atm). Then:
p(atm) = p(inhg) × (3386.38815789 / 101325)
Equivalently, divide by how many inhg fit into one atm (Pa per atm divided by Pa per inhg):
p(atm) = p(inhg) ÷ 29.92125984256154
Examples
Example #1: Convert 1 inhg to atmosphere
1 inhg = 1 inhg × (3386.38815789/101325) atm = 0.0334210526 atm
1 inhg = 1 inhg ÷ 29.92125984256154 = 0.0334210526 atm
1 inhg × (3,386.38815789/101,325) = 0.033421 atm
Example #2: Convert 10 inhg to atmosphere
10 inhg = 10 inhg × (3386.38815789/101325) atm = 0.3342105263 atm
10 inhg = 10 inhg ÷ 29.92125984256154 = 0.3342105263 atm
10 inhg × (3,386.38815789/101,325) = 0.334211 atm
Summary
To convert inHg to Atmosphere, multiply the value in inhg by (3386.38815789 Pa per inhg) / (101325 Pa per atm). Equivalently: value_atm = value_inhg × (3386.38815789 / 101325). Numerically, 1 inhg equals 0.0334210526315322 atm.
Relationship context
Both inHg and Atmosphere are converted by fixed multiples of the pascal. Multiplying by (Pa per inhg) ÷ (Pa per atm) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| inHg (inhg) | Atmosphere (atm) |
|---|---|
| 0.1 | 0.0033421053 |
| 1 | 0.0334210526 |
| 2 | 0.0668421053 |
| 3 | 0.1002631579 |
| 4 | 0.1336842105 |
| 5 | 0.1671052632 |
| 6 | 0.2005263158 |
| 7 | 0.2339473684 |
| 8 | 0.2673684211 |
| 9 | 0.3007894737 |
| inHg (inhg) | Atmosphere (atm) |
|---|---|
| 10 | 0.3342105263 |
| 20 | 0.6684210526 |
| 30 | 1.0026315789 |
| 40 | 1.3368421053 |
| 50 | 1.6710526316 |
| 60 | 2.0052631579 |
| 70 | 2.3394736842 |
| 80 | 2.6736842105 |
| 90 | 3.0078947368 |
| 100 | 3.3421052632 |