Mmhg To Atm Calculator – Convert MM Mercury and Atmospheres

To convert Millimeters of Mercury (mmHg) to Atmospheres (atm) in calculator, input pressure value in mmHg and click calculate to see result in atm.

The calculator also provides additional pressure unit conversions including Pascal (Pa), Kilopascal (kPa), and Bar.

Mmhg To Atm Conversion Chart

Millimeters of Mercury (mmHg)	Atmospheres (atm)
1 mmHg	0.001316 atm
2 mmHg	0.002632 atm
3 mmHg	0.003947 atm
4 mmHg	0.005263 atm
5 mmHg	0.006579 atm
10 mmHg	0.01316 atm
50 mmHg	0.06579 atm
100 mmHg	0.132 atm
250 mmHg	0.329 atm
500 mmHg	0.658 atm
760 mmHg	1 atm
750 mmHg	0.986843 atm
1000 mmHg	1.316 atm

How to Convert mmHg to atm?

Obtain pressure value in mmHg from a barometer, manometer, or other instruments, to convert mmHg to atm, divide the pressure value in mmHg by 760 (standard atmospheric pressure in mmHg), which is based on fact that 1 atm equals 760 mmHg at standard conditions.

Formula for mmHg to atm Calculations

Basic Conversion Formula:

atm = mmHg ÷ 760
where:
mmHg = Pressure in millimeters of mercury
760 = Standard atmospheric pressure in mmHg

Alternative Using Pascal:

atm = (mmHg × 133.322) ÷ 101325
where:
133.322 = Conversion factor from mmHg to Pascal
101325 = Number of Pascal in 1 atm

Temperature Correction:

mmHg(corrected) = mmHg × (1 - 0.000182 × (T - 20))
where:
T = Temperature in Celsius
20 = Reference temperature

Example 1: Standard Blood Pressure (Systolic)

• Input Value = 120 mmHg
• Converted Value = 0.158 atm
• Additional Units = 15.998 kPa
• Application = Medical Measurement

Example 2: Normal Atmospheric Pressure

• Input Value = 760 mmHg
• Converted Value = 1.000 atm
• Additional Units = 101.325 kPa
• Application = Standard Pressure

Example 3: High Altitude Pressure

• Input Value = 500 mmHg
• Converted Value = 0.658 atm
• Additional Units = 66.661 kPa
• Application = Atmospheric Science

Example 4: Low Pressure System

• Input Value = 740 mmHg
• Converted Value = 0.974 atm
• Additional Units = 98.658 kPa
• Application = Weather Monitoring

Example 5: Vacuum System

• Input Value = 50 mmHg
• Converted Value = 0.066 atm
• Additional Units = 6.666 kPa
• Application = Laboratory Equipment

What are mmHg and atm?

Millimeters of Mercury (mmHg) is a unit of pressure equal to the pressure exerted by a column of mercury 1 millimeter high at 0°C under standard gravity. It’s commonly used in Medical Applications for blood pressure measurements and in Meteorology for atmospheric pressure readings.

Atmosphere (atm) is a standard unit of pressure defined as the average pressure exerted by Earth’s atmosphere at sea level. One atm equals 760 mmHg or 101.325 kPa. This unit is widely used in Physics, Chemistry, and Engineering applications. Both units are crucial in various scientific fields, especially when dealing with Gas Laws, Blood Pressure Monitoring, and Atmospheric Science.