Day Counter
Pick two dates to see how many days lie between them, plus the same span in weeks, in years, months and days, and in business days.
Last updated October 19, 2026
Defaults to today
Defaults to 30 days from today
Result
30 days
The end date is 30 days after the start date.
4 weeks and 2 days · 21 business days (Mon-Fri)
Show the work
- The start date, November 12, 2026, is day zero. The end date is December 12, 2026.
- Days between the two dates: 30 days.
- Whole weeks plus leftover: 4 weeks and 2 days.
- As calendar units: 0 years, 1 month, 0 days.
- Business days (Monday to Friday): 21. Public holidays are not removed.
How days are counted
days = later date − earlier date, with the earlier date as day zero
The calculator subtracts the earlier calendar date from the later one. The start date is day zero, so Monday to Tuesday is 1 day. To count both the first and the last day, add 1 to the result.
Weeks are the whole 7-day blocks in that span, and the leftover is shown in days. Years, months and days are counted in whole calendar units. Business days skip Saturdays and Sundays; public holidays are not removed. Dates are calendar dates, so time zones and daylight saving time do not change the answer.
See how we calculate for the formulas, sources and review schedule behind every calculator.
Also useful alongside this calculator: Countdown Calculator.
Popular answers: Days from today.
Counting with or without the start date
The result is the number of days that pass between the two dates, so the start date is day zero. From Monday, October 19 to Friday, December 25, 2026 that is 67 days. If you need to count both the first and the last day, for example the days of a booking or an event that runs through the end date, the figure is 68.
Use the first reading for deadlines and countdowns (“how many days until”) and the second when you are counting calendar boxes that are occupied.
Calendar days, weeks and business days
In the worked example 67 days is 9 whole weeks (63 days) plus 4 days. Nine full weeks hold 45 business days, and the last 4 days, Tuesday to Friday, add 4 more, giving 49. Business days count each weekday after the start date up to and including the end date.
Public holidays are not removed because they differ by country, region and employer. If your workplace is closed on Thursday, November 26 and on December 25, subtract those 2 days from 49 to get 47. A date range that starts or ends on a weekend gives fewer business days than its length in weeks suggests.
Months, years and leap years
A month is not a fixed number of days. February 2026 has 28 days and March has 31, so “30 days” and “one month” only coincide in some months. The calculator therefore reports whole calendar months and leftover days separately: October 19 to December 25 is 2 months and 6 days.
Leap years add February 29. January 1, 2024 to January 1, 2025 spans 366 days, while the same dates one year later span 365. The table above shows the running day count through 2026, which is handy for checking a 30, 60 or 90 day window: 90 days after January 1, 2026 is April 1.
How to use the Day Counter
- Enter the start date. It defaults to today.
- Enter the end date.
- Read the number of days and whether the end date is ahead of or behind the start date.
- Open "Show the work" for weeks, months and business days, or use Copy, Print or Share.
Worked example
From Monday, October 19, 2026 to Friday, December 25, 2026 is 67 days. That is 9 weeks and 4 days, or 2 months and 6 days. Of those 67 days, 49 are business days (Monday to Friday), with no holidays removed.
| Date | Days from Jan 1, 2026 |
|---|---|
| February 1, 2026 | 31 |
| March 1, 2026 | 59 |
| April 1, 2026 | 90 |
| May 1, 2026 | 120 |
| June 1, 2026 | 151 |
| July 1, 2026 | 181 |
| August 1, 2026 | 212 |
| September 1, 2026 | 243 |
| October 1, 2026 | 273 |
| November 1, 2026 | 304 |
| December 1, 2026 | 334 |
| January 1, 2027 | 365 |
Frequently asked questions
Does the day counter include the start date?
No. The start date is not counted, so the result is the number of nights or days that pass after it. Add 1 if you want to include both the first and the last day.
Can I count backwards from a past date?
Yes. Enter the two dates in either order. The result shows the number of days and tells you whether the end date is ahead of or behind the start date.
Does it skip weekends or holidays?
The main result counts every calendar day. The business-day figure skips Saturdays and Sundays but does not remove public holidays, which differ by country and region.
Why is 30 days not always one month?
Months have 28 to 31 days. January 1 to February 1 is 31 days but February 1 to March 1, 2026 is 28. The calculator shows whole months and leftover days alongside the total days.
Is a leap year counted correctly?
Yes. February 29 is counted in leap years, so January 1 to January 1 of the next year is 366 days for 2024 and 365 days for 2026. Nothing you enter is stored or uploaded.