Create a field for reading time in ACF.
create an acf/save_post action.
get the post content you want use to calculate, make the calculation and then use update_field() to save this value to the post.
then you can just display this field where it needs to be shown.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users
Clients need flexibility. Developers need a repeatable workflow that doesn’t have a steep learning curve. See how digital marketing agency Noiza found both with Advanced Custom Fields in our latest case study.https://t.co/BxQAy6COJt