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Date Calculator
▸About this tool
Calculate days between two dates or add and subtract days from any date. Includes business days option.
▸Privacy and details
Your files never leave your device.
Fast browser processing with no account required.
Optimized for desktop and mobile with accessible controls.
▸How to use
- Choose mode: "Days between dates" or "Add/subtract from date".
- For days between: pick a start date and end date: the difference is shown instantly.
- For add/subtract: pick a start date and enter the number of days to add or subtract.
- Toggle "Business days only" to exclude weekends from the count.
▸Why use this tool
Project deadlines, contract durations, age calculations, and scheduling all require accurate date arithmetic. This tool handles both date difference and date offset calculations with optional weekend exclusion, all in your browser.