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Quick answers.

›How many days between two dates?

Pick the start and end date — we count the days, including or excluding the end date depending on your preference.

›Does it count the start and end day?

By default we count the gap between dates (inclusive of one endpoint). For exact day counts (both endpoints inclusive) add 1.

›How are months and years computed?

We give you both: a 'calendar' breakdown (e.g. 1 year 2 months 3 days) and totals in days, weeks, etc. The breakdown follows civil calendar rules.

›Does it handle leap years?

Yes — leap years are accounted for in all calculations.

›Is the calculator free?

Yes — fully free, no signup, runs in your browser.