Date Difference
Calculate the time between any two dates - broken down into years, months, and days, plus totals in weeks, months, hours, and minutes.
Recommended Settings
Pro Tips
- •The order you enter the two dates doesn't matter - the calculator automatically determines which is earlier
- •The years/months/days breakdown is the most intuitive figure, while the totals are useful for calculations or comparisons
- •This calculates whole calendar days between dates, not accounting for a specific time of day
- •Total months combines years and months into one figure, useful for things like calculating a subscription or loan term
Most Popular
Most users check the total days or the years/months/days breakdown between two significant dates
When to Use This Tool
Find out exactly how much time has passed since a past event.
Calculate how long a project or task spanned between its start and end dates.
See how much time remains until a future date or milestone.
Calculate the exact duration of a contract or subscription period.
How It Works
Determine which of the two entered dates is earlier
Calculate the difference in years, months, and days, adjusting for the actual number of days in each month
Also calculate the total difference in days, weeks, months, hours, and minutes for quick reference
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side calendar date arithmetic for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
Does the order of the dates matter?
No, the calculator automatically determines which date is earlier and calculates the difference accordingly.
Does this account for time of day?
No, this tool compares whole calendar dates without a specific time - use Countdown Timer if you need to track down to the second toward a specific date and time.
How is 'total months' calculated?
It's simply years multiplied by 12, plus the remaining months - so 1 year and 3 months becomes 15 total months.
Is my data sent to a server?
No. The calculation happens entirely in your browser.
What's the difference between this and Age Difference Calculator?
They use the same underlying math, but this tool is framed for any two dates (events, deadlines, durations), while Age Difference Calculator is specifically framed around comparing two people's birth dates.