volume_mute
Converting inches of mercury to mm Hg
publish date: 2026/05/19 19:27:57.728259 UTC
volume_mute
A weather map shows a pressure system with a reading of 30 inches of mercury. What is this pressure expressed in millimeters of mercury (mm Hg)? (Note: 1 inch = 25.4 mm)
Correct Answer
762 mm Hg
Explanation
To convert inches to millimeters, multiply by 25.4: 30 inches × 25.4 mm/inch = 762 mm Hg. This is the standard atmospheric pressure reference in millimeters.
Reference
Basic Physics: A Self-Teaching Guide