Add days to a date
Find the date X days, weeks or months from a given date.
How it works
Adding a month keeps the same day of the month when it exists (31 January + 1 month gives 28 or 29 February).
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- Start date31 October 2026
- Amount30
- UnitDays
- DirectionAdd
you get:
- Resulting dateMonday, 30 November 2026
- Difference30 days
Frequently asked questions
How does the “Add days to a date” tool work?
Adding a month keeps the same day of the month when it exists (31 January + 1 month gives 28 or 29 February).
What do I need to enter?
Just fill in: start date, amount, unit, direction. The result updates as you type.
Can you give an example?
Start date: 31 October 2026; Amount: 30; Unit: Days; Direction: Add → Resulting date: Monday, 30 November 2026; Difference: 30 days.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.