Does this account for leap years?

Yes. The calendar-aware algorithm correctly handles February 29 in leap years.

Can I calculate age using this?

Yes. Enter your birthdate as the start date and today as the end date to get your exact age.

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Find the exact days, months, and years between any two dates.

Select Dates

Find the exact difference between two calendar dates.

Start Date

End Date

Date Difference

Exact gap between the two selected dates.

Duration

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Live result

Total Days—

Total Weeks—

How date difference is calculated

Built for speed, clarity, and SEO depth.

This calculator computes the calendar-accurate difference between two dates, accounting for varying month lengths and leap years.

Date Difference Logic

Calendar-aware algorithm for accurate date gaps.

(End date - Start date) in milliseconds ÷ 86,400,000

Converts milliseconds to calendar days.

Subtract years, then months, then remaining days

Accounts for leap years and month length variations.

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