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# Calculations & formulas

Calculate with form field on (sub)forms and (sub)form overviews

There are 3 types of calculations:

1. Calculate with **numeric fields**
2. Calculate with **date-time fields**
3. Calculate **numeric footer values** on (sub)form overviews

**Reference to point 1 and 2**: The configuration of a numeric or date-time formula is available on the property "**Formula**" of tab General of the field.

![](https://870194474-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M_kE41Rl4pOtwKfvvQq%2Fuploads%2FYXtwtcIYbDZFdc1nu3IC%2FImage%20field%20properties%20formulas.png?alt=media\&token=224e3b59-e262-486c-8c10-0f71e2ab1860)

**Reference to point 3**: The configuration of a overview (footer) formula is available on the tab "Layout - Page - Overview fields - Configure". Here you can edit numeric calculation fields, by enable "styling" and select "numeric format"

![](https://870194474-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M_kE41Rl4pOtwKfvvQq%2Fuploads%2FHNMo7RYsvE354Wp83hWy%2FImage%20field%20overview%20footer%20formulas.png?alt=media\&token=6c944d3f-3b5f-4faa-baba-a4dc685d7416)


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