Date & Time

Add Days to Date

Add days to a date directly in your browser. Calculate future or past dates by adding or subtracting calendar days from any start date.

Add Days to Date

Add days to a date directly in your browser. Calculate future or past dates by adding or subtracting calendar days from any start date.

This tool runs in your browser. Your input is processed locally and is not uploaded.

About this Tool

Use this free add days to date calculator to find a date before or after a given start date. Enter a start date, choose the number of calendar days, and calculate the resulting date instantly.

Conversion Formula

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The calculator starts with the selected date and adds or subtracts the entered number of calendar days. Weekends and holidays are counted because this tool works with calendar days, not business days.

Examples

Add 14 days to 2026-03-01 = 2026-03-15
Subtract 30 days from a deadline to find an earlier date
Add 90 days to an invoice date to calculate a calendar due date

Frequently Asked Questions

What does add days to date mean?

It means calculating a new date by moving forward by a selected number of calendar days from a start date.

FAQ

Can I subtract days too?

Yes. You can enter a negative value or choose subtract mode to calculate a date before the start date.

FAQ

Does this skip weekends?

No. This tool counts calendar days. To skip weekends, use the add business days calculator.

FAQ

Is the start date included?

The tool can support either counting style, but standard date addition usually starts counting from the day after the start date.

FAQ

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