Days Between Dates Calculator
📦 Days Between Dates Calculator Source Code $4.99
Get the complete, ready‑to‑deploy HTML file with all styling and logic. This is the exact code powering the demo above — no dependencies, works offline, and 100% client‑side. Calculates the exact difference between any two dates in days, weeks, months, and years. Includes business days, weekend exclusion, countdown mode, and a monthly breakdown. Perfect for project planning, event counting, and deadline tracking. One‑time purchase, lifetime access.
What Is a Days Between Dates Calculator?
A days between dates calculator computes the exact time difference between two calendar dates. It's essential for project planning, tracking deadlines, counting down to events, and understanding durations in business, education, and personal life. This tool goes beyond simple day counting — it breaks down the difference into days, weeks, months, and years, and can exclude weekends to calculate business days. With countdown mode, it shows how much time remains from today to a future date. All calculations use JavaScript's Date object for precision and accuracy.
How to Use
- Select the start and end dates using the date pickers.
- Toggle options — include or exclude the end date, exclude weekends, or switch to countdown mode.
- Use quick presets to add days, months, or years to the start date, or jump to today.
- Click "Calculate" — view the difference in days, weeks, months, years, business days, and weekend days.
- Check the monthly breakdown to see how the days are distributed across months.
Frequently Asked Questions
Does this tool count leap years correctly?
Yes. JavaScript's Date object handles leap years automatically. February 29 is correctly counted when it falls between the two dates.
Does this tool work offline?
Yes. Once the page loads, all calculations happen locally in your browser. No network requests are made.
What is countdown mode?
Countdown mode shows the time remaining from today to the selected end date. It's useful for counting down to events, deadlines, or milestones.
Disclaimer: This tool performs all operations locally in your browser. No data is stored, transmitted, or logged. Results are for informational purposes only.