Enter two dates. Get the full breakdown.
Years, months, weeks, days, hours and minutes — plus optional workday mode that skips weekends. Everything runs on your device.
Four steps, a full breakdown.
No manual required — here's the entire flow.
Set the start
Pick a start date and time using the native picker, or hit TODAY to jump to the current date and time.
Set the end
Choose an end date and time. The tool updates the result automatically as you change either side.
Toggle options
Switch on workday mode to skip weekends, or include the end date to count the final day as a full day.
Copy or download
Copy the full breakdown to your clipboard or download it as a text file for your records.
Built for accuracy, not guesswork.
The details that make date and time arithmetic faster to reason about — without ever leaving your browser.
Runs on your device
All date arithmetic runs locally in JavaScript. Your start and end dates never leave your device.
Full breakdown
See the total difference in every unit at once, plus a clean bar visual that shows the relative size of each part.
Workday mode
Flip one switch to count only business days — perfect for project timelines and delivery estimates.
Questions people actually ask.
The short answers — with the long ones one tap away.
How does the date difference calculator work?+
Enter a start date and an end date. The tool computes the exact duration between them and breaks it down into years, months, weeks, days, hours, minutes and seconds. Everything runs locally in your browser.
Can I calculate the difference between two times, not just dates?+
Yes. Each date field also accepts a time. Set the times on both sides to get a duration down to the minute or second.
What is workday mode?+
Workday mode counts only Monday to Friday and ignores Saturdays and Sundays. It's useful for project timelines, delivery estimates and business-day calculations.
Does the tool account for leap years and month lengths?+
Yes. It uses the browser's built-in date arithmetic, which correctly handles leap years, months with different numbers of days, and daylight-saving transitions.
Is my input uploaded to a server?+
No. All calculation happens locally in your browser using JavaScript. Your dates never leave your device.
Can I count only business days between two dates?+
Yes — switch on workday mode and the tool will skip weekends and count only Monday to Friday.
Is this date difference calculator free?+
Yes, it's completely free with no account, no sign-up, and no limit on how many times you use it.