Day CounterCalculator
Find the date that lands a set number of days from any date with this free Day Counter Calculator. Get the exact target date and day of the week, and see how many business days sit inside the period.
Count Days From a Date
Pick a start date and a number of days to find the target date.
How the Day Counter Works
Four quick steps to count days from any date.
Pick Start Date
Choose a start date in the calendar, or press "Use Today".
Enter Day Count
Type the number of days to move. Positive numbers go forward; switch to subtract mode to go back.
Choose Direction
Pick Add to count forward or Subtract to count backward from your start date.
View Target Date
See the target date, its weekday, and the business and weekend days inside the period.
What Is a Day Counter Calculator?
How day counting and date arithmetic work.
Day counting explained
A Day Counter Calculator moves a date forward or back by a fixed number of days. It answers questions such as "What date is 90 days from now?" or "What was the date 60 days ago?"
It allows for variable month lengths of 28 to 31 days and for leap years. Thirty days after January 15 is not February 15 but February 14, because January has 31 days.
Business days vs calendar days
Business days include only Monday to Friday, and many legal deadlines and shipping promises are measured that way. Thirty calendar days usually contain 21 or 22 business days.
Common uses
Return windows ("30 days to return"), legal limits ("file within 60 days"), project timelines ("delivery in 45 days") and medical schedules ("review in 14 days") all come down to counting days.
When to Use a Day Counter
Situations where precise day counting matters.
Shipping & Delivery
Add the carrier's shipping days to the order date to estimate delivery dates.
Legal Deadlines
Find filing deadlines, appeal windows and limitation periods, whether they are set in calendar or business days.
Medical Follow-ups
Turn "come back in 14 days" or "follow up in 6 weeks" into an actual date for check-up appointments.
Return Policies
Count from the purchase date to see whether you are still inside a 30-day return window and when it closes.
Project Milestones
Count forward from kick-off to fix milestone dates — "phase one done in 45 days" becomes a real date.
Prescription Refills
Work out when a 90-day prescription will run out so the refill is ordered in time.
Day Counter Examples
Three worked day counting examples.
90-day return policy
Bought on Jan 1 → 90 days later is April 1 in a non-leap year — the last day to return or exchange.
30-day notice period
Notice handed in on June 1 → 30 days later is July 1, the day it takes effect.
14-day isolation period
Starting March 10 → 14 days later is March 24, when the period ends.
Day Counter FAQ
Answers to common questions about the Day Counter Calculator.
Choose a start date and type how many days to count. The days are added for you and the exact target date appears, weekday included, with month lengths and leap years taken into account.
It counts calendar days. Alongside the target date, the result also tells you how many of those days are business days (weekdays) and how many fall on weekends.
Yes. Switch to "Subtract" or enter a negative number to count back from the start date. For example, 30 days before July 15 is June 15.
A business day is a weekday, Monday to Friday, that isn't a public holiday. Weekdays are counted here, but holidays are not removed because they vary from country to country.
Leap years follow the Gregorian rules — every fourth year, except century years not divisible by 400 — so February 29 is included exactly when it should be.
Yes. It is free with no sign-up, and the dates you enter are processed in your browser only.
Enter today's date (or press "Use Today") and type 100 in the day count. The calculator shows the exact date and weekday 100 days ahead, adjusting for month lengths and leap years automatically.