@davemq You can get org table calculations (which use Emacs Calc, as you say) to handle units (of measure) by adding ";u" to the end of any calculation.
Not quite sure why but org mode 9.8 seems a lot faster than before which has also improved org-roam startup time. org-roam also got an update (which may have contributed). Happy days !
GNU Emacs: 31.0.50 (build 8, x86_64-pc-linux-gnu, GTK+ Version 3.24.51, cairo version 1.18.4) of 2026-02-23
org-mode: 9.8
org-roam: 20260224.1637
2026-01 Austin #Emacs Meetup
https://macadie.info/2026/02/24/2026-01-austin-emacs-meetup/