Millimeter of mercury to Atmosphere Converter
Convert millimeters of mercury to atmospheres with this free pressure converter. The exact relationship used on this page is 1 millimeter of mercury = 0.00131578966114 atmospheres. Type any number — the result updates instantly, works on phones and desktops, and is ready to copy into homework, a spec sheet, or a shopping list.
Formula: Atmosphere = Millimeter of mercury × 0.00131578966114
How to convert millimeters of mercury to atmospheres
- Enter the value in millimeters of mercury in the converter.
- Read the equivalent amount in atmospheres.
- Use the swap link if you need atmosphere to millimeter of mercury instead.
- Check the table for common values without typing.
Worked examples
- 1 mmHg = 0.001315789661 atm
- 5 mmHg = 0.006578948306 atm
- 10 mmHg = 0.01315789661 atm
- 25 mmHg = 0.03289474153 atm
Conversion table
Common millimeters of mercury values converted to atmospheres.
| mmHg | atm |
|---|---|
| 1 | 0.001315789661 |
| 2 | 0.002631579322 |
| 3 | 0.003947368983 |
| 4 | 0.005263158645 |
| 5 | 0.006578948306 |
| 6 | 0.007894737967 |
| 7 | 0.009210527628 |
| 8 | 0.01052631729 |
| 9 | 0.01184210695 |
| 10 | 0.01315789661 |
| 20 | 0.02631579322 |
| 50 | 0.06578948306 |
| 100 | 0.1315789661 |
| 250 | 0.3289474153 |
| 500 | 0.6578948306 |
| 1,000 | 1.315789661 |
About this conversion
Millimeter of mercury (mmHg) and Atmosphere (atm) are both pressure units. Tire pressure, weather maps, scuba, and industrial gauges all report pressure in different units. Bookmark this URL when you convert millimeters of mercury to atmospheres often, then explore related pairs in the same category if you need a different target unit.
Need the other direction? Open the atmosphere to millimeter of mercury converter.
FAQ
How many atmospheres are in 1 millimeter of mercury?+
1 millimeter of mercury equals 0.00131578966114 atmospheres.
What is the formula to convert millimeters of mercury to atmospheres?+
Atmosphere = Millimeter of mercury × 0.00131578966114
How do I convert millimeters of mercury to atmospheres by hand?+
Multiply the millimeter of mercury value by 0.00131578966114. Example: 10 millimeters of mercury × 0.00131578966114 = 0.0131578966114 atmospheres.
Is this mmHg to atm converter accurate?+
Yes. Linear conversions use internationally agreed factors relative to SI. Temperature and inverse fuel units use the standard offset or reciprocal formulas, not a guessed scale factor.