Find the exact duration between two dates.
This calculator finds the exact number of calendar days, weeks, and approximate months between any two dates by computing the direct difference, accounting for varying month lengths and leap years. It's commonly used for things like calculating notice periods, tracking project timelines, working out interest-accrual periods, or simply counting down to an event.
The 'months' figure shown is an approximation (using an average month length of 30.44 days), since months vary from 28 to 31 days — for precise month-and-day counts, the exact day difference is the more reliable figure.
This calculator shows the number of days between the two dates as a straightforward subtraction — if you need an inclusive count (counting both the start and end day), simply add 1 to the result.
Because months don't have a consistent length (28-31 days), the months figure here is calculated using an average month length, which gives a close approximation rather than an exact whole-month count.
Yes, though be aware that specific financial calculations (like simple interest for a partial period) may use particular day-count conventions (like 30/360 or actual/365) that can differ slightly from a straightforward calendar day count.