Pressure
Atmospheres to Millimeters of Mercury
Convert atmospheres to millimeters of mercury instantly.
About this conversion
Atmospheres (atm) equal normal air pressure at sea level: 1 atm = 101,325 Pa ≈ 1.013 bar. Millimeters of mercury (mmHg) are used for blood pressure. Normal blood pressure is approximately 120/80 mmHg. 1 Atmospheres equals 760 millimeters of mercury. The converter above calculates the result instantly — you can also swap the units to convert in the other direction.
How to use
Enter a value in the atmospheres field and instantly see the result in millimeters of mercury. Click the swap button to reverse the conversion.
Manual calculation
1 atmospheres = 760 millimeters of mercury. Example: 10 atm = 7,600 mmHg.
Frequently asked questions
How do you convert atmospheres to millimeters of mercury?
Multiply the number of atmospheres by 760 to get millimeters of mercury. Example: 10 atm × 760 = 7,600 mmHg.
Are atmospheres bigger or smaller than millimeters of mercury?
Atmospheres is larger than Millimeters of Mercury. One atmosphere equals 760 millimeters of mercury, so the result is a larger number when converting from atmospheres to millimeters of mercury.
What is 5 atmospheres in millimeters of mercury?
5 atm equals 3,800 mmHg.
How many atmospheres are in 1 millimeters of mercury?
1 mmHg equals 0.0013158 atm. This is the reverse conversion — useful if you have a value in millimeters of mercury and want it in atmospheres.
What is atmosphere?
Atmospheres (atm) equal normal air pressure at sea level: 1 atm = 101,325 Pa ≈ 1.013 bar.
What is millimeters of mercury used for?
Millimeters of mercury (mmHg) are used for blood pressure. Normal blood pressure is approximately 120/80 mmHg.