TIME DURATION
0 years
Enter two dates to calculate the time duration.
This calculator gives a simple duration estimate between two calendar dates from the year 0100 to 9999.
How to calculate time duration
Time duration is calculated by comparing one date with another date. The result can be shown in years, months, weeks and days.
Example: 1 January 2020 to 1 January 2025
From 1 January 2020 to 1 January 2025 is exactly 5 years.
What this calculator is for
This time duration calculator helps calculate the length of time between two dates. It can be useful for events, milestones, anniversaries, periods apart, personal dates, projects, deadlines or general time calculations.
The calculator uses calendar dates only. It does not include hours, minutes, seconds, time zones or daylight saving time.
Important note
This calculator is for general informational purposes only. Some organisations, contracts or official processes may calculate dates differently depending on whether start dates, end dates, weekends or public holidays are included.
Frequently Asked Questions
What does this time duration calculator show?
It shows the time between two dates in years, months and days, along with total months, total weeks and total days.
Can I use this for anniversaries or milestones?
Yes. You can use it for anniversaries, milestones, personal dates, events and general planning.
Does this include the start date?
No. This calculator counts the difference between two dates. For example, from 1 January to 2 January is 1 day.
Can I calculate historical dates?
Yes. This calculator supports dates from the year 0100 onwards.
Does this include time zones?
No. This calculator uses calendar dates only and does not account for time zones or daylight saving time.