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Business Day Calculator
Calculate deadlines by adding business days, or count business days between two dates (excludes weekends).
100% BROWSER-BASED
10 business days from start
Thursday, January 8, 2026
/ HOW TO USE
How to Use Business Day 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 deadlines
- —Plan delivery dates
- —Count workdays between dates
- —Determine contract end dates
/ FAQ
Frequently Asked Questions
Are holidays excluded?
Currently, this calculator excludes weekends (Saturday and Sunday) but does not exclude public holidays.
/ 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