Convert inch of mercurys to atmosphere (standard)s
1 inHg = 0.033421057393 atm — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 27 pressure & stress units
- Gigapascals GPa 0.000 003 386 388 640 34
- Megapascals MPa 0.003 386 388 640 34
- Kilopascals kPa 3.386 388 640 34
- Hectopascals hPa 33.863 886 403 4
- Pascals Pa 3386.388 640 34
- Millipascals mPa 3 386 388.640 34
- Micropascals µPa 3 386 388 640.34
- Bars bar 0.033 863 886 403 4
- Millibars mbar 33.863 886 403 4
- Atmosphere (standard)s atm 0.033 421 057 393
- Atmosphere (technical)s at 0.034 531 554
- Torrs Torr 25.400 003 618 6
- Millitorrs mTorr 25 400.003 618 6
- Millimeter of mercurys mmHg 25.4
- Centimeter of mercurys cmHg 2.54
- Inch of mercurys inHg 1
- Millimeter of waters mmH₂O 345.315 54
- Centimeter of waters cmH₂O 34.531 554
- Inch of waters inH₂O 13.5951
- Foot of waters ftH₂O 1.132 925
- Pound per square inchs psi 0.491 154 147 47
- Kilopound per square inchs ksi 0.000 491 154 147 47
- Pound per square foots psf 70.726 197 235 7
- Kilogram-force per square centimeters kgf/cm² 0.034 531 554
- Kilogram-force per square meters kgf/m² 345.315 54
- Newton per square millimeters N/mm² 0.003 386 388 640 34
- Dyne per square centimeters dyn/cm² 33 863.886 403 4
Every row is Inch of mercury (inHg) converted through the pascal, in exact rational arithmetic.
How to convert inch of mercurys to atmosphere (standard)s
Multiply the number of inch of mercurys by 0.033421057393 to get atmosphere (standard)s.
Inch of mercury: US altimeter settings and barometric pressure.
Atmosphere (standard): Exactly 101 325 Pa by definition.
Inch of mercury to Atmosphere (standard) conversion table
| Inch of mercurys (inHg) | Atmosphere (standard)s (atm) |
|---|---|
| 1 inHg | 0.033 421 057 |
| 2 inHg | 0.066 842 115 |
| 3 inHg | 0.100 263 17 |
| 5 inHg | 0.167 105 29 |
| 10 inHg | 0.334 210 57 |
| 20 inHg | 0.668 421 15 |
| 25 inHg | 0.835 526 43 |
| 50 inHg | 1.671 052 9 |
| 100 inHg | 3.342 105 7 |
| 250 inHg | 8.355 264 3 |
| 500 inHg | 16.710 529 |
| 1000 inHg | 33.421 057 |
Atmosphere (standard) to Inch of mercury conversion table
| Atmosphere (standard)s (atm) | Inch of mercurys (inHg) |
|---|---|
| 1 atm | 29.921 256 |
| 2 atm | 59.842 511 |
| 3 atm | 89.763 767 |
| 5 atm | 149.606 28 |
| 10 atm | 299.212 56 |
| 20 atm | 598.425 11 |
| 25 atm | 748.031 39 |
| 50 atm | 1496.0628 |
| 100 atm | 2992.1256 |
| 250 atm | 7480.3139 |
| 500 atm | 14 960.628 |
| 1000 atm | 29 921.256 |
Frequently asked
How many atmosphere (standard)s are in a inch of mercury?
One inch of mercury equals 0.03342105739 atmosphere (standard)s (inHg → atm). That figure is exact, not rounded.
How do you convert inch of mercurys to atmosphere (standard)s?
Multiply the number of inch of mercurys by 0.033421057393 to get atmosphere (standard)s.
What is 1 atm in inch of mercurys?
One atmosphere (standard) is 29.92125558 inch of mercurys.
What is 10 inHg in atm?
10 inHg = 0.334 210 57 atm.
What exactly is a inch of mercury?
US altimeter settings and barometric pressure.
What exactly is a atmosphere (standard)?
Exactly 101 325 Pa by definition.