Calculate age

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Calculate age in Excel or MySQL

Calculate age in Excel

If the column value is well-formatted

  • =(TODAY()- BIRTH_DAY)/365[1]
  • =ROUNDDOWN(YEARFRAC(BIRTH_DAY, TODAY(), 1), 0)

Calculate age in MySQL

SELECT `birth_date`, TIMESTAMPDIFF (YEAR, `birth_date`, CURDATE()) AS age
FROM `my_table` 
WHERE `birth_date` IS NOT NULL

[2]

Challenge of real world data

The column value is NOT well-formatted such as

  • year only e.g. 2022
  • month & date only e.g. 08-11

References