Online Date Calculator — Date-only features

Choose a function below (all date-only: no time). The tool supports ISO (YYYY-MM-DD) and DD/MM/YYYY display and smart month arithmetic.

Select operation

First date

Second date

Amount

Unit & action

Input format

Output format

Tip: date inputs default to today. For "difference" and "compare" both dates are used. For add/sub, only First date is used.

Result will appear here.