Can you do date calculations for date of birth verification in survery forms?

For instance, asking for a date of birth to confirm respondent is in the target age range?

Yes, FormNX inbuilt provides age verification feature, so won't have to do any calculations for this. You can check for Minimum Age, Maximum Age, Add custom error message for them. Check this Age Verification in Forms documentation. https://formnx.com/details/docs/features/age-ve...