Add to a Date
Add days, weeks, months, or years to any date and calculate the resulting date instantly.
Why use this tool?
Adding time to dates is useful for project planning, deadline calculations, contract periods, and many other scenarios.
- Multiple units — Add days, weeks, months, and years in a single calculation.
- Accurate results — Handles leap years and varying month lengths correctly.
- Quick today button — One-click button to set today's date as the starting point.
- Privacy-focused — All calculations happen in your browser. No data is sent to any server.
How to use
- Select a starting date using the date picker, or click Set Today.
- Enter the number of years, months, weeks, and/or days you want to add.
- Click Calculate Result to see the resulting date.
- Click the copy button to copy the result to your clipboard.
Frequently Asked Questions
Yes, the MushTools Add to a Date calculator is completely free with no sign-up required. All calculations happen in your browser.
You can add days, weeks, months, and years to any date.
Yes, the calculator automatically handles leap years and varying month lengths correctly.