January 1 2025 Plus 30 Days. This simple date calculator allows you to add/subtract days from a date, or count days between days and after each calculation get the most accurate result. This online calculator computes the result of addition the specified number of days to the specified date.
The date calculator lets you add or subtract days, weeks, months and years to or from a given date to calculate a past or future date. Below is a date calculator, where you can choose to add or subtract years, months, weeks, or days.