Find the exact number of days, weeks, months and years between any two dates. Includes business days, timeline view, fun facts and more.
Quick Presets
⚠️ Business days exclude weekends but do not account for public holidays, which vary by country.
The simplest and most accurate method — convert both dates to milliseconds and subtract.
Business days are calculated by iterating through each day and excluding Saturdays and Sundays.
A year is a leap year if divisible by 4, except century years must be divisible by 400.
Click any example to instantly calculate.