Date Calculator

About this tool

Find the exact number of days between two dates, or calculate a future or past date by adding or subtracting days, weeks, or months from any starting date. Enter the dates and calculation type to get an instant, accurate result. Useful for planning project deadlines and deliveries, tracking billing and payment due dates, counting days until an event, and working out dates for travel, schedules, or personal milestones.

How to use

1. 1Select the type of date calculation you need
2. 2Enter the start date (and end date if needed)
3. 3Choose whether to add or subtract days
4. 4Press Calculate to get the result
5. 5Review the number of days or the resulting date

Pros & Cons

Features

• 100% free to use
• No registration required
• Processes locally in your browser
• Works on all devices

Privacy

Your data is processed entirely in your browser and never sent to our servers. We have no access to your files or data.

Frequently Asked Questions

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