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Date Difference Calculator
Calculate the exact difference between two dates in days, weeks, months, and years.
100% BROWSER-BASED
/ HOW TO USE
How to Use Date Difference Calculator
This tool runs entirely in your browser. Upload your file, make your changes, and download the result. Your files never leave your device — everything is processed locally for maximum privacy.
/ FEATURES
Key Features
100% Client-Side Processing
No File Size Limits
Completely Free
Privacy Focused
Instant Results
Works Offline
/ USE CASES
Common Use Cases
- —Calculate project duration
- —Find days until an event
- —Determine contract length
- —Calculate age or duration
/ FAQ
Frequently Asked Questions
How accurate is the calculation?
The calculation accounts for varying month lengths and leap years to give you an exact day count.
/ YOUR PRIVACY
Your Privacy is Guaranteed
Unlike other tools that upload your files to servers, ToolBox processes everything locally in your browser.
No server uploads
Instant processing
Works offline