Category
Time
Select Dates
Calculate the precise time span between two dates.
Use calendar dates in your local time zone (YYYY-MM-DD). Time of day is not included in this calculation.
Difference is calculated as the time from the start date up to this date. Adjust both dates to compare any range.
Time in Different Units
Years
0
Months
0
Weeks
0
Days
0
Hours
0
Minutes
0
How It Works
This calculator finds the exact difference between two dates and converts that duration into multiple units.
Results are shown as a detailed calendar breakdown and as approximate totals in weeks, months, years, hours, and minutes.
- Accounts for leap years automatically.
- Handles varying month lengths (28 to 31 days).
- Uses local time with calendar-day precision.
Common Use Cases
Project duration
90 days
~3 months or 12.9 weeks
Age calculation
30 years
10,957 days or 263,000 hours
Vacation countdown
45 days
6.4 weeks or 1,080 hours
Employment tenure
5 years
1,826 days or 260 weeks
Frequently Asked Questions
Does this account for leap years?
Yes. Leap years are included automatically when calculating date differences.
Why are there different month results?
Total months are shown using an average month length, while detailed breakdown uses real calendar months.
Can I calculate future dates?
Yes. You can compare today with future dates to measure time remaining.
What if I swap the start and end dates?
This calculator reports absolute difference, so order does not change the magnitude of the result.