Days Between Dates Calculator

0Total days
0Weeks
0Months (approx)
0Hours
Pick two dates.
0
Years (decimal)
0
Minutes
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How the days between dates calculator works

Enter two dates and the tool counts the time between them and expresses it several ways at once: total days, weeks, approximate months, hours, minutes, and decimal years. It is the quick answer for countdowns, anniversaries, and any time you need the same span in different units.

The same span, many units

Total days is the exact calendar count. Weeks divide that by seven, months use the average month length, and years use 365.25 days to account for leap years. Hours and minutes multiply the day count out, which is useful for countdowns to a launch, deadline, or special occasion.

How it differs from a date difference

A date difference breaks a span into years, months, and days together, like an age. This tool instead gives each unit as its own running total, so you can say a span is 1,000 days, or roughly 33 months, or about 2.7 years, whichever framing fits.

Common uses

Count down to a wedding, holiday, or product launch, total up how long since a memorable date, or convert a span into hours for billing or planning. The dates can be in any order and leap years are handled automatically.

Frequently asked questions

How many days between two dates? Enter both and read the total days, counted exactly to the calendar.

How many weeks or hours is that? The tool shows weeks, hours, minutes, and decimal years alongside the day count.

Does date order matter? No, it measures the span either way.

Related calculators: Date Difference, Age, Business Days.

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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.