Psychrometric Calculator Excel Link Free Download -

If you work in HVAC, civil engineering, or building science, you know the psychrometric chart is your best friend—until you need to plot 50 different data points. Doing it manually with a green glass ruler and a pencil is a rite of passage, but in today’s fast-paced world, efficiency is king.

Head to your favorite HVAC forum or university extension site, grab a trusted file, and test it against a known chart point (e.g., 80°F DB / 67°F WB should give you about 50% RH). If it matches, you just saved yourself $500 on software. Do you have a favorite free Excel psychro sheet? Share the link in the comments below to help fellow engineers stay cool and dry! psychrometric calculator excel free download

That is where the comes in.