Time Tools
Calculate Duration Between Two Dates
Calculate the duration between two dates easily with our online tool. Get the difference in days, months, and years instantly.
Inputs
Answer
Date durationEnter start and end dates, then hit Calculate
Duration—
Years—
Months—
Days—
Start—
End—
How the duration calculator works
Enter a start date and end date. The calculator reports the calendar difference as years, months, and days — borrowing from months when needed so the day count stays accurate across uneven month lengths.
Yearsfull year spans
Monthsremaining months
Daysremaining days
Orderend ≥ start
This is a calendar duration, not a business-day count. For weekdays only, use the Business Days Calculator instead.
Worked example: from Jan 15, 2024 to Mar 20, 2025 is 1 year, 2 months, and 5 days.