Find the difference between two dates in days, weeks, and more.
Select a start and end date to calculate the difference.
Measure the span between two calendar dates for project planning, billing periods, and personal timelines. Optionally count business days.
The day count is the absolute difference between the two calendar dates (end − start in days).
Monday through Friday. Holidays are not excluded in this version.
Calculate percentages, reverse percentages, and percent change.
Calculators
Calculate exact age in years, months, and days from a birth date.
Calculators
Convert Unix timestamps to dates and back using your local timezone.
Developer Tools
Convert length, weight, and temperature units instantly in your browser.
Calculators
Split the bill with tip percentage and per-person totals instantly.
Business Tools
Compare two texts line by line and highlight additions and removals.
Text Tools
