@Joan_Mershon There’s not an easy way to do this, unfortunately, unless you have more information. You could do a rough calculation: if you assume that the person’s birthday is the same day as when the data is entered, you can have a formula that adds 1 for every year that passes after the ‘Created Date’ passes.

However, this could be grossly inaccurate. If they are 21 and turn 22 tomorrow, they will appear as 21 until a year from that date even though they were 22 for 364 days. This means you will only be able to get an estimate. Thankfully, you will never overestimate someone’s age, just underestimate it. Therefore, you will be at maximum 365 days off from the correct age of the user.

If this amount of error is acceptable, here is the formula you are looking for:

If that error amount is not acceptable, you will need to start asking for someone’s birthday instead of their age. That way you can calculate age dynamically.