Date Calculator

An all-in-one date calculator: find the time between two dates, or add and subtract days, weeks, months and years.

What is the Date Calculator?

Date calculations come up for deadlines, subscriptions, EMIs, travel and events.

How does it work?

Differences use calendar-aware year/month/day arithmetic. Adding months keeps the same day where possible, falling back to the month’s last day.

Example

From today, 180 days later is roughly 6 months ahead; 90 days back finds a start date for a 90-day period.

Frequently asked questions

Is the end date included?

Differences count elapsed days, so the end date is not included. Add one day if you need both ends counted.

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