Date Difference Calculator
Find the exact number of days, weeks, months, and years between two dates.
Date Difference Calculator
How to Use
- Pick a start date and an end date.
- Results update instantly in multiple units.
- Toggle "Include end date" to count both boundary dates.
- Use the "Business days" figure for working-day calculations.
Frequently Asked Questions
QHow are business days calculated?
Business days count only Monday to Friday. Weekends (Saturday and Sunday) are excluded. Public holidays are not deducted since these vary by country.
QWhat does "include end date" mean?
By default, the difference between Jan 1 and Jan 3 is 2 days (Jan 1 to Jan 2 to Jan 3). Including the end date counts Jan 3 itself, giving 3 days.
QHow are months and years approximated?
Months and years in the breakdown are exact calendar counts (e.g. full months elapsed). The "total months" figure is exact; the years/months/days breakdown gives the most precise human-readable form.
About This Calculator
Date calculations use the Gregorian calendar. Results correctly account for leap years and variable month lengths (28, 29, 30, 31 days).