Days Between Dates Calculator
Calculate total days, business days, weeks and days, and months and days between any two dates.
Counting the exact number of days between two dates by hand is easy to get wrong, especially across months with different lengths or when weekends need to be excluded. This days between dates calculator takes a start date and an end date and instantly returns the total days, the business days only count with weekends excluded, and the same span expressed as weeks and days or months and days. It is built for project managers tracking deadlines, HR teams calculating notice periods, landlords prorating rent, and anyone planning around a specific date range. A month-by-month breakdown table shows exactly how many days from the range fall into each calendar month, which is useful for billing or payroll that splits across partial months. It also helps when comparing two scheduling options side by side, since you can adjust either date and immediately see how the total and business day counts change. Change either date and every number updates immediately, with the final total ready to copy to your clipboard.
Date Range
92 days
3 months, 0 days · 13 weeks, 1 days
Business Days (Excludes Weekends)
65 days
Month-by-Month Breakdown
| Month | Days in Range |
|---|---|
| Jun 2026 | 11 |
| Jul 2026 | 31 |
| Aug 2026 | 31 |
| Sep 2026 | 20 |
How to Use This Calculator
1. Enter the start date
Select the first date in your range.
2. Enter the end date
Select the last date in your range. It must be on or after the start date.
3. Review the totals
See total days, business days, weeks and days, and months and days.
4. Check the month-by-month breakdown
See exactly how many days fall into each calendar month.
How It Works
Total Days = End Date − Start DateExample: from January 15 to March 10 is 54 total days. Excluding Saturdays and Sundays, that range contains 39 business days, or roughly 7 weeks and 5 days.
Frequently Asked Questions
How do I calculate the number of days between two dates?
Subtract the start date from the end date. This calculator does that automatically and also breaks the total down into weeks and days, and months and days.
What counts as a business day?
A business day is any weekday, Monday through Friday. This calculator excludes Saturdays and Sundays when calculating the business days count, but does not account for public holidays.
Why does the month-by-month breakdown matter?
It shows exactly how many days from your date range fall into each calendar month, which is useful for prorating rent, billing, or payroll across partial months.
Does this calculator include both the start and end date?
The total days figure represents the full span between the two dates. The month-by-month breakdown includes both the start date and end date in their respective months.
Can I use this for project deadlines or contract terms?
Yes. Many people use a days between dates calculator to count down to deadlines, calculate notice periods, or verify the length of a lease or contract term.