org-duration-string-to-minutes
org-duration-string-to-minutes is a compiled Lisp function in `org.el
'.
(org-duration-string-to-minutes S &optional OUTPUT-TO-STRING)
Convert a duration string S to minutes.
A bare number is interpreted as minutes, modifiers can be set by
customizing `org-effort-durations' (which see).
Entries containing a colon are interpreted as H:MM by
`org-hh:mm-string-to-minutes'.