How to use this tool
Enter the starting date and days to add and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
Formula
Result date = starting date plus the signed number of days.
Example
Adding 14 days to 1 January produces 15 January.
Prepare your inputs
Enter a starting date and a signed whole number of days. Positive adds days and negative subtracts them.
Understand the result
This is calendar arithmetic. It does not implement working-day deadlines, holiday calendars or jurisdictional filing rules.
About this version
This page uses a shared calculation method. Industry and country labels provide a browsing context; they do not change the formula or imply specialist or local regulatory validation. Currency labels do not perform currency conversion.
Limitations and assumptions
Uses calendar days, not working days. Public holidays are not excluded. Detailed content, accessibility and edge-case review remains ongoing.