Days Until Calculator
A countdown calculator that tells you exactly how many days, weeks, and months until any future date — birthday, holiday, exam, wedding, or deadline. Also shows business days.
Quick events
Days until…
—
Select a date to start counting
Weeks
—
Months
—
Business days
—
Percentage of year elapsed
Method
How this calculator works
The calculator finds the difference between today's date and your target date, then converts it into days, weeks, months, and business days.
Days = Target Date − Today (in days)
Weeks = Days ÷ 7
Months = Days ÷ 30.44
Business days = Mon–Fri only (excl. weekends)- Pick a target date using the date picker.
- Optionally enter an event name (Birthday, Exam, Holiday, etc.).
- Or click a quick-pick button for common events like Christmas or New Year.
- See days, weeks, months, business days, and year progress instantly.
Examples
Worked examples
Real numbers, end-to-end results.
Today → December 25
Days until Christmas
Use the quick pick for instant result.
Today → Exam date
Study days remaining + business days
Plan your revision schedule.
Today → +100 days
100 days · ~14 weeks · ~3.3 months
100-day milestone tracker.
Use cases
When to use it
- Count days until Christmas, birthday, or vacation.
- Track how many business days until a project deadline.
- Plan study schedule for an upcoming exam.
- Create a personal milestone countdown.
FAQ
Frequently asked questions
How are business days calculated?
What if my target date is in the past?
How many days until Christmas?
Can I save a countdown?
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