Date & Time

Date Calculator

Add or subtract days, weeks, months and years from any date — or count the exact difference between two dates.

Tip: adding months clamps to the last day of the target month (e.g. Jan 31 + 1 month = Feb 28/29).

📅 Add & subtract

Days, weeks, months or years from any date.

🥆 Date difference

Exact days, weeks and months between two dates.

🕑 Weekday

See what day of the week the result falls on.

📈 Month math

Smart month clamping handles short months.

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