Calculate the exact number of days, weeks and months between any two dates.
A days between dates calculator is a free online tool that calculates the exact number of days, weeks and months between any two dates. It accounts for leap years and can optionally exclude weekends to show only business days — perfect for project planning, deadline tracking and age calculations.
Calculate how many days are left until a deadline, delivery date or project milestone.
Determine notice periods, contract durations and legally required waiting periods.
Find out how many days until an anniversary, birthday or special event.
Calculate interest accrual periods, loan durations and payment schedules.
A standard year has 365 days. A leap year has 366 days. Leap years occur every 4 years — any year divisible by 4, except century years unless also divisible by 400.
Business days exclude Saturdays and Sundays, and optionally public holidays. Toggle the 'business days only' option to see the weekday count.
A calendar day includes every day of the week including weekends. A business day (working day) includes only Monday to Friday, excluding weekends.
Enter your date of birth as the start date and today as the end date. The tool will show your exact age in days.