Convert mmHg to ATM Online

MmHg to Atm Converter

The MmHg to Atm Converter converts millimeters of mercury (mmHg) to standard atmospheres (atm) and back. One standard atmosphere equals 760 mmHg at 0 °C. mmHg is widely used for blood pressure and vacuum measurements. Related: Pressure Converter and Lbs to Psi Converter.

Conversion Formula

$$\text{atm} = \frac{\text{mmHg}}{760}$$

$$\text{mmHg} = \text{atm} \times 760$$

Based on the historical definition where $760\,\text{mmHg} = 1\,\text{atm}$ at the mercury column standard.

Frequently Asked Questions

How many mmHg are in 1 atm?

One standard atmosphere equals 760 mmHg. This comes from the height of a mercury column at standard conditions.

How do I convert 1520 mmHg to atm?

Divide by 760: 1520 mmHg = 2 atm.

Is mmHg the same as torr?

For most practical purposes, yes. One torr is defined as 1/760 atm, so 1 torr ≈ 1 mmHg. They differ slightly in precise SI definitions.

What is normal blood pressure in atm?

Normal blood pressure is about 120/80 mmHg. That equals roughly 0.158/0.105 atm. mmHg is the standard unit for blood pressure readings.

How do I convert mmHg to psi?

Multiply mmHg by 0.0193368, or use our Pressure Converter for mmHg, psi, Pa, bar, and other units.

What is standard atmospheric pressure in mmHg?

Standard atmospheric pressure at sea level is 760 mmHg, which equals 1 atm, 101.325 kPa, or 14.696 psi.

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Mmhg to Atm Converter

MmHg to Atm Converter

Conversion Formula

Frequently Asked Questions

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