DATE & TIME TOOL
Days Between Dates Calculator
Find the number of days, weeks, or months between two dates.
Total days
—
In weeks & months
—
About this tool
Find exactly how many days fall between any two dates — useful for deadlines, event planning, contract terms, or just settling a debate about how long ago something happened. Toggle "Include both dates" to count inclusively (for example, a Monday-to-Friday work week is 5 days inclusive, or 4 days exclusive).
Frequently asked questions
- What does "include both dates" change?
- By default the calculation counts the gap between the two dates (exclusive). Turning this on adds one extra day, counting both the start and end date themselves as part of the span.
- Can the end date be before the start date?
- Yes — the result is shown as a positive number of days either way, with the calculation simply based on the gap between the two dates.
- How is the "months" figure calculated?
- It's an approximation based on calendar months between the two dates, since months vary in length — the days total is always the exact figure.