atm to inHg converter
1 standard atmosphere equals 29.921252 inches of mercury. Conversions use inHg = atm × 29.921
atm → 29.921252 inHg
inHg = atm × 29.921
Converter
Worked examples
- 1 atm = 29.921252 inHg
- 2 atm = 59.842505 inHg
- 5 atm = 149.606 inHg
- 10 atm = 299.213 inHg
- 100 atm = 2,992.13 inHg
standard atmospheres to inches of mercury conversion table
| atm | inHg | Arithmetic |
|---|---|---|
| 1 atm | 29.921252 inHg | × 29.921 |
| 2 atm | 59.842505 inHg | × 29.921 |
| 3 atm | 89.763757 inHg | × 29.921 |
| 4 atm | 119.685 inHg | × 29.921 |
| 5 atm | 149.606 inHg | × 29.921 |
| 6 atm | 179.528 inHg | × 29.921 |
| 8 atm | 239.37 inHg | × 29.921 |
| 10 atm | 299.213 inHg | × 29.921 |
| 12 atm | 359.055 inHg | × 29.921 |
| 15 atm | 448.819 inHg | × 29.921 |
| 20 atm | 598.425 inHg | × 29.921 |
| 25 atm | 748.031 inHg | × 29.921 |
| 30 atm | 897.638 inHg | × 29.921 |
| 40 atm | 1,196.85 inHg | × 29.921 |
| 50 atm | 1,496.06 inHg | × 29.921 |
| 60 atm | 1,795.28 inHg | × 29.921 |
| 70 atm | 2,094.49 inHg | × 29.921 |
| 80 atm | 2,393.7 inHg | × 29.921 |
| 90 atm | 2,692.91 inHg | × 29.921 |
| 100 atm | 2,992.13 inHg | × 29.921 |
How to convert atm to inHg
- Take your value in standard atmospheres.
- Multiply by 29.921
- That is your answer in inches of mercury — no rounding needed until you choose a display precision.
Related conversions
inHg to atmkPa to inHgbar to inHgpsi to inHgatm to kPaatm to baratm to psiatm to mmHgatm to hPaall pressure units
Questions
How many inches of mercury in 1 standard atmosphere?
Exactly 29.921252 inHg. The factor follows from the definitions of both units, not from a measurement, so it is exact.
How do I convert atm to inHg?
Multiply the standard atmospheres figure by 29.921 — or use the converter above, which updates as you type.
Is atm to inHg the same as inHg to atm?
No — they are inverses. One atm is 29.921252 inHg, while one inHg is 0.03342106 atm.
What is 1 atm in inHg?
1 atm = 29.921252 inHg (see the value page for the full arithmetic).