Question 1

How do I convert inHg to mmHg?

Accepted Answer

Multiply by 25.4. 1 inHg = 25.4 mmHg. 29.92 inHg = 760 mmHg = 1 atm.

Question 2

What is standard atmospheric pressure in mmHg?

Accepted Answer

760 mmHg = 1 atm = 29.92 inHg = 1013 hPa. This defines sea-level pressure at 0°C.

Question 3

What pressure units do different industries use?

Accepted Answer

PSI in US/UK automotive and HVAC. Bar/kPa in European engineering. mmHg/torr in medicine. Atmospheres in diving and altitude.

Question 4

Is gauge pressure different from absolute pressure?

Accepted Answer

Yes! Gauge pressure reads 0 at atmospheric pressure. Absolute pressure adds atmospheric (~14.7 psi). Vacuum gauge shows negative gauge pressure.

Inhg to Mmhg Pressure Converter - Free Online Tool

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