Counting down helps you plan – how many weekends are left before a trip or how many weeks to prepare for an exam. Countdown pages that tick live use a lot of data; this one is calculated once in your browser.
How to use the Countdown Calculator
- Event date
- Event time
- Time now
- Countdown started on
Results update as you type, and every field accepts the units shown in its menu.
How it works
Enter the event date and time, the current time and, optionally, when you started counting down.
Tips
- Check whether the end date should be included – event durations usually include it, elapsed time does not.
- Months have 28–31 days, so “one month” is counted by calendar date, not as 30 days.
- Use 24-hour time or set AM/PM carefully when entering clock times.
- Time zones and daylight-saving changes are not applied unless the calculator says so.
Common mistakes to avoid
- Counting a 30-day month when a calendar month is meant (or the reverse).
- Forgetting leap years when counting days across February.
- Mixing decimal hours (7.5 h) with clock time (7:30).
Inputs explained
| Field | What to enter |
|---|---|
| Event date | A date |
| Event time | A clock time (hours and minutes) |
| Time now | A clock time (hours and minutes) |
| Countdown started on | A date |
What each result means
- Days to go = [Event date] – today()
- Total hours to go = ([Event date] – today())×24 + [Event time] – [Time now]
- Weeks to go = [Days to go]÷7
- Weekends to go = (max(floor((([Event date] – 1) – ((today()) + mod((6) – weekday(today()), 7)))÷7) + 1, 0))
- Full months to go = monthsbetween(today(), [Event date])
- Event day = weekday([Event date])
- Waiting time passed = (today() – [Countdown started on])÷([Event date] – [Countdown started on])×100
Formula
Time to go = (event date + event time) − (today + time now)Waiting passed = (today − start) ÷ (event − start)Worked example
Inputs — Event date: 2026-12-24; Event time: 18:00; Time now: 12:00; Countdown started on: 2026-09-25.
Results — Days to go = 60; Total hours to go = 1,446; Weeks to go = 8.6; Weekends to go = 8; Full months to go = 1; Event day = Thursday; Waiting time passed = 33.3 %.
Frequently asked questions
How many days until my event?
Enter the event date – the days to go are counted from today.
Does the countdown include today?
No – it counts the full days between today and the event day.
How many weekends until my holiday?
See "Weekends to go" – it counts Saturdays before the event day.
What formula does the Countdown Calculator use?
Time to go = (event date + event time) − (today + time now).