Atmospheric inHg to psi upon anything/a strange second request

Atmospheric inHg to psi upon anything/a strange second request   (01/26/2024, 5:12 PM)

Does conversion of pressure as described on the site as inches of mercury match the effects of pounds/square inch?
Am trying to determine the effect of barometric pressure on my body and bodies of others - a non-scientific “study” if I may borrow a true scientific descriptor.

A very less-important question: this site lists conversion to and from Smoots, a legal system in use by either the City of Cambridge or Suffolk County, Mass.
I would be delighted to also see a conversion table for the Porzebeish system developed by Dr. Donald Knuth in his early years of meterology.
Why? Well just because it should be easy to add using his original standards as he originally measured them, the thickness of any still-extant copies of Mad Magazine has by now changed, as is the way of all newsprint stock, and actually changes daily based on temperature and humidity (one reason printers attempt to keep full rolls and dink rolls (two measurements of width that have changed over time) are kept wrapped and stacked in a relatively dry room until needed. A “dink” roll - used to add 2 pages to a broadsheet or 4 to a tabloid have shrunken much over the years since newspapers were taxed by the UK by the page and a huge page represented a substantial savings for publishers.