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Wedding Countdown Calculator

Count the days, and weeks and days, until your wedding date.

What this tool does

Count the days, and weeks and days, until your wedding date. You fill in these fields: Target date and Count from. It shows days until, weeks and days, and day of the week.

Inputs

  • Target date: A date.
  • Count from: A date. Starts as today's date. Defaults to today. Change it to count from another day.

How to use

  1. Pick a date for "Target date".
  2. Pick a date for "Count from".
  3. Read the result: days until, weeks and days, and day of the week. It appears once every required field has a valid value.

Worked examples

Example 1. Inputs:

  • Target date: December 25, 2026
  • Count from: October 8, 2026

Results:

  • Days until: 78 days
  • Weeks and days: 11 weeks, 1 day
  • Day of the week: Friday

How this is worked out: Oct 8 to Oct 31 = 23, Nov = 30, Dec 1 to Dec 25 = 25, total 23 + 30 + 25 = 78. 78 = 11 x 7 + 1. Weekday: Jan 1, 2026 is a Thursday and Oct 8 is 280 days later (280 = 40 x 7), so Oct 8 is a Thursday; 78 days later = 77 + 1 gives a Friday. Oct 8 to Oct 31 = 23, Nov = 30, plus 25 = 78. 78 = 11 x 7 + 1. Thursday + 1 = Friday.

Example 2. Inputs:

  • Target date: October 8, 2026
  • Count from: October 8, 2026

Results:

  • Days until: 0 days
  • Weeks and days: 0 weeks, 0 days
  • Day of the week: Thursday
  • Note: That date is the day you are counting from, so there are 0 days to go.

Example 3. Inputs:

  • Target date: October 1, 2026
  • Count from: October 8, 2026

Results:

  • Days until: -7 days
  • Weeks and days: 1 week, 0 days
  • Day of the week: Thursday
  • Note: That date has passed. It was 7 days before the date you are counting from. The weeks and days are that gap.

How this is worked out: Oct 1 is 7 days before Oct 8, so the signed count is -7 and the date is past. 7 = 1 week 0 days. Oct 1 is 7 days before Oct 8, so the signed count is -7. Oct 1 is 7 days before Oct 8, so the signed gap is -7.

Example 4. Inputs:

  • Target date: January 1, 2027
  • Count from: December 31, 2026

Results:

  • Days until: 1 day
  • Weeks and days: 0 weeks, 1 day
  • Day of the week: Friday

How this is worked out: Reviewer: Jan 1 is the day after Dec 31, so 1 day. Weekday: Jan 1, 2026 is a Thursday and 2026 has 365 days = 52 weeks + 1 day, so Jan 1, 2027 is a Friday. Reviewer: the day after Dec 31 is Jan 1, 1 day on. 2026-12-25 is a Friday (78 days after Thursday 2026-10-08, 78 = 11 x 7 + 1), and Jan 1 is 7 days later, so also a Friday.

Where this comes from

Count the days until a date. The number of whole calendar days from the start date to the target date. It is 0 on the day itself and negative once the target date has passed. The start day is day zero. Source: The Gregorian calendar: month lengths and the leap year rule (every fourth year, except century years not divisible by 400).

Limitations

  • Counts whole calendar days only. Time of day and time zones are not considered.
  • Accepts dates from year 0001 to 9999 in the Gregorian calendar.
  • Today's date is read from your device when the page loads.

FAQs

Q: Does the count include the start day?
A: No. The start day is day zero, so tomorrow is 1 day away and the start day itself is 0.
Q: Can I count from a day other than today?
A: Yes. Change the Count from date. It starts as today's date on your device.
Q: What if the date has already passed?
A: The count goes below zero and a note says so. For example -7 means the date was 7 days before the day you are counting from.
Q: Are leap years counted?
A: Yes. The count uses real calendar days, including February 29.
Q: Are weekends and holidays taken out?
A: No. Every calendar day is counted.

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