How many days between two dates?
Enter a start and end date to get the exact number of days, weeks, and months between them.
How to use the days between dates calculator
Choose a start date and an end date to calculate the exact elapsed time between them. The result gives the number of days and also summarizes the span in weeks and months, which is useful for planning trips, projects, contracts, milestones, and personal events.
This calculator uses an exclusive day count: it measures the full days between the two dates. If you need to include both the start and end date in a schedule, add one day to the displayed total.
Related tools: Add or subtract days from a date · Count business days instead · Calculate an exact age
Frequently asked questions
Does this include both the start and end date?
We count the number of full days between the two dates (exclusive count). If you need an inclusive count, add one day to the result.
Can I use this for contracts or deadlines?
Yes — it's commonly used for lease terms, notice periods, and project timelines. For legal deadlines, always confirm with the relevant authority or document.