Documentation here: https://www.wundermatics.com/docs-category/calculated-fields-for-acf/
The calculations will be done on the front end AND the backend, and the results will be saved in an ACF numeric field. As a result, you can export the data to a spreadsheet for example, and the calculated results will be included. Look at the examples and documentation, the possibilities are endless, including calculating repeater fields.
Also, you can perform the calculations within Meta boxes or ACF Gutenberg Blocks, your choice…
Note: I am very biased towards this plugin, as I’m listed as a contributor.
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