Birthday countdown

How many days until my birthday?

Find the next occurrence of your birthday, count the calendar days from today and keep the countdown visible on your iPhone.

4 minute readUpdated 18 July 2026

Birthday countdown calculator

Enter the full date of birth to find the next birthday and the age they will turn.

How to calculate days until your birthday

Take the month and day of your birthday and find its next occurrence. If the date is still ahead this calendar year, count to that date. If it has already passed, use the same date next year. If today is your birthday, the answer is zero days.

For example, if today is 16 July and your birthday is 2 August, count forward to 2 August this year. If your birthday was 2 June, count to 2 June next year. Use real calendar dates so different month lengths and leap days are handled correctly.

The birthday year matters for age, not the countdown.A countdown only needs month and day. Add the birth year when you also want to know the exact current age or the age someone will turn.

Create a birthday countdown on iPhone

In LifeDates, add your date of birth to a profile. The Today screen shows the next birthday and how many days remain. Once the birthday passes, the countdown automatically rolls forward to the next year.

  1. Create your profile and enter the full date of birth.
  2. Open Today to see your next birthday in line.
  3. Turn on a reminder if you want an alert before the day.
  4. Add a Home Screen or Lock Screen widget with Premium for a glanceable countdown.
LifeDates birthday countdown and exact age on the Today screen

Count down to family and friends' birthdays

A personal countdown is fun. A list of upcoming birthdays is useful. Add family, friends and pets and LifeDates sorts the next dates so you can see who arrives first. Relationship labels and notes help you remember the context, while the age timeline shows how old each person will be.

For planning, choose a reminder before the countdown reaches zero. A week gives you time for gifts or bookings; a day is usually enough for a message or call.

Birthday countdown questions

How many weeks until my birthday?

Divide the whole-day countdown by seven for complete weeks, keeping the remainder as days. A 24-day countdown is three weeks and three days.

What happens for a 29 February birthday?

Leap-day birthdays require a convention in non-leap years. For official uses, follow the relevant legal or organisational rule. A consumer countdown may use 28 February or 1 March depending on its calendar behaviour.

Can I share a birthday countdown?

LifeDates includes share cards for birthdays, exact ages and milestones, with additional styles in Premium.

Keep the next birthday in sight.

Download LifeDates free for automatic birthday countdowns, exact ages and reminders.

Download on theApp Store

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