Calculate the exact difference between two dates in days, weeks, months and years. Shows the calendar difference and total hours. Free online tool. All processing runs locally in your browser. Your data is not uploaded to any server.
100% Local Processing
How to Use
Enter two dates and get the exact span between them, expressed every way that matters: days, weeks, months, hours and a proper calendar difference.
Steps
Pick a start date and an end date with the date pickers.
Click Calculate. The order does not matter, the tool sorts them for you.
Read the result and use Copy to take the breakdown elsewhere.
What the result shows
Total days, weeks, approximate months, hours, minutes and seconds.
A proper calendar difference, such as 2 years 3 months 5 days.
The weekday of both the start and the end date.
Rounded values are labelled, so you know which are exact.
Features
Works with any two dates, in either order.
Calendar difference is computed month by month, not by dividing by 30.
Date pickers parse as local wall clock time, never shifted by UTC.
All processing runs locally in your browser. Your data is not uploaded to any server.