Date Difference
Days, weeks and timeline insight between two dates.
Result
Total days0
Weeks0
Months0
10/9/2025
0 days
10/9/2025Years0
Hours0
Minutes0
Bar highlights up to one calendar year for quick comparisons.
How the Date Difference Calculator Works
The calculator finds the time between two dates by converting them to UTC and subtracting the start from the end. The result is broken into days, weeks and years.
Manual calculation
Count the number of days between the dates and divide as needed: 7 days per week and 365 days per year (taking leap years into account).
The gradient bar in the calculator highlights how much of a single calendar year the span represents. Longer periods cap at one year so you can instantly compare shorter and longer ranges visually.
Why it matters
Knowing exact gaps between dates is useful for project planning, age tracking and legal deadlines.
Source: ISO 8601