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How To Calculate Age From Date Of Birth

82 views August 15, 2020 admin 3

As of now, Easy Forms has a special feature that would let you calculate the age using the date of birth quickly.

To get started, we are going to create a Form with a Date field (Label: Date of Birth), a Number field (Age), and a Submit button. Your form should look like this screenshot:

Calculate Age From Date Of Birth

Now go to the Rule Builder (Forms > Actions > Conditional rules) and click “Add rule”.

1. Name: Calculate Age From Date Of Birth
2. Click “Add condition” > Date of Birth is present
3. Click “Add action” > Evaluate
5. Formula: differenceInYears(now(), {{date_1}})
6. Set Result to Field: Age.

Your Rule should look like this screenshot:

Conditional Rule To Calculate Age From Date Of Birth

Note: The differenceInYears() function calculates the number of years between two dates. Then we use the now() function to obtain the first date and the second date is obtained from the Date field.

That’s all!

Now your form should look like this:

Calculate Age From Date Of Birth

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Advanced Techniques
  • How To Calculate Age From Date Of Birth
  • Create Users that Can Only Submit Forms
  • Calculate the Number of Days between Two Dates
  • Create Users that Only Can Manage Form Submissions of Shared Forms
  • Reject Email Addresses From Specific Domains
  • How to Display Radio Buttons as Buttons
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