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How to calculate age in years, months, and days in Excel and Google Sheets
Excel & Google Sheets
=DATEDIF(A2,TODAY(),"Y")&" yrs "&DATEDIF(A2,TODAY(),"YM")&" mo "&DATEDIF(A2,TODAY(),"MD")&" days"Try it with your data
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Step by step
- 1Enter the birthdate in column A (A2).
- 2In B2 enter: =DATEDIF(A2,TODAY(),"Y")&" yrs "&DATEDIF(A2,TODAY(),"YM")&" mo "&DATEDIF(A2,TODAY(),"MD")&" days"
- 3"Y" returns complete years, "YM" returns remaining months after full years, "MD" returns remaining days after full months.
- 4Copy down for additional rows.
Tips
- To get just the age in whole years (e.g., for an Age column), simply use =DATEDIF(A2,TODAY(),"Y").
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Frequently asked
Why doesn't DATEDIF appear in Excel's formula suggestions?
DATEDIF is a legacy Lotus 1-2-3 function kept for compatibility. It works fine but is not listed in the autocomplete. Type it manually.
Can I use a fixed end date instead of TODAY()?
Yes — replace TODAY() with a cell reference or a date like DATE(2024,12,31) to calculate age at a specific point in time.