Deadline & Milestone Calculators

This group brings together the deadline and milestone calculators — tools that project forward to a due date, or count toward a personal or academic landmark.

For deadlines, the Deadline Calculator finds a due date a set time after a start date, the Business Day Deadline Calculator does the same in working days only, and the Notice Period Calculator works out when a notice period ends.

On the academic side, the Academic Semester Calculator measures a term's length and how far through it you are, and the Semester Countdown tracks the days left. And for the fun of a personal landmark, the Life Milestones Calculator finds dates like your 1,000th or 10,000th day, with 10,000 Days Old focusing on that single celebrated marker.

Every tool works from the dates you enter and runs entirely in your browser.

All Deadline & Milestone Calculators (7)

Deadline Calculator Work out a deadline date a set number of days from a start date — in calendar or business days — and see how many days are left from today. Business Day Deadline Calculator Find a deadline a set number of business days from a start date. Weekends are skipped, so a "10 working days" response window lands on the right date. Notice Period Calculator Work out when a notice period ends — 30, 60, or 90 days from the date you give notice — in calendar or business days, with the days remaining. Academic Semester Calculator Enter your semester start and end dates to see its length in weeks, how far through the term you are, and how many days and weeks are left. Semester Countdown Count down to the end of the semester. Enter your term start and end dates to see how many days and weeks are left, and how much of the term is done. Life Milestones Calculator Enter your date of birth to see the exact dates of your 1,000th, 10,000th, and later day milestones, which one is next, and how many days until it. 10,000 Days Old Calculator Find the exact date you turn 10,000 days old — the weekday it falls on and how many days until (or since) it — plus your other big day-count milestones.

Frequently asked questions

Can I set a deadline in working days rather than calendar days?
Yes. The Business Day Deadline Calculator counts only working days, skipping weekends and holidays, while the Deadline Calculator uses calendar days.
What is a life-day milestone?
It is a round number of days lived — like 10,000 days — which lands on an unexpected calendar date. The Life Milestones Calculator finds these dates from your date of birth.

Browse other categories

Age Calculators Date & Days Calculators Working Days Calculators Countdown Calculators Retirement Calculators Anniversary Calculators Calendar Calculators Financial Year Calculators