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Half birthday calculator
Your half birthday is six months after your birthday — the day you turn “and a half”. Enter your birthday to find it.
Half birthdays by birth month
Keep the same day of the month and move six months on: a 14 January birthday has a 14 July half birthday.
January → July
February → August
March → September
April → October
May → November
June → December
July → January
August → February
September → March
October → April
November → May
December → June
When the day doesn't exist
Some half-birthday months are too short to hold the same day. The usual rule is to use the last day of that month instead.
| Birthday | Half birthday |
|---|---|
| 29 August | 28 February (29 February in a leap year) |
| 30 August | 28 February (29 February in a leap year) |
| 31 August | 28 February (29 February in a leap year) |
| 31 March | 30 September |
| 31 May | 30 November |
| 31 October | 30 April |
| 31 December | 30 June |
| 29 February | 29 August |
Found your half birthday? See your exact age down to the second, or your birth flower.
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