Date Add Calculator

Use this date add calculator to find a date after adding a specific number of days, weeks, months, or years to a starting date. Enter the starting date, choose a time unit, and enter the amount to calculate the resulting date.

Use a negative number to subtract.

Source: MDN Web Date

Example

For example, adding 30 days to July 1, 2024 results in July 31, 2024. You can also add weeks, months, or years when calculating a future date.

Frequently Asked Questions

How do you add days to a date?
Choose the starting date, enter the number of days to add, and calculate the resulting date. For example, adding 30 days to July 1, 2024 gives July 31, 2024.
Can I add weeks, months, or years to a date?
Yes. This calculator can add days, weeks, months, or years to a starting date and return the resulting calendar date.
Can I add a negative number to subtract from a date?
Yes. Entering a negative amount subtracts that amount from the starting date. For example, adding -10 days is equivalent to subtracting 10 days.
What date is 30 days after July 1, 2024?
30 days after July 1, 2024 is July 31, 2024.
Does adding months account for different month lengths?
Yes. Calendar months have different numbers of days, so adding a month is handled as a calendar-month operation rather than treating every month as a fixed number of days.