Emacs has org-mode, and org-mode has tables with formulas which can invoke calc-mode. calc-mode also has units: https://www.gnu.org/software/emacs/manual/html_

Emacs has org-mode, and org-mode has tables with formulas which can invoke calc-mode. calc-mode also has units: https://www.gnu.org/software/emacs/manual/html_node/calc/Units.html#Units https://www.gnu.org/software/emacs/manual/html_node/calc/Uni...