Date Difference & Working Days
Calculate days, weeks, months, and business days between two dates online with our Date Difference & Working Days Calculator. Instantly plan projects, deadlines, or schedules—accurate, easy to use, and browser-based.
Runs in your browser
WebAssembly, no server
No signup required
Open and use instantly
Files stay private
Nothing leaves your device
How It Works
Pick a start date and an end date.
Ensure the end date is after the start date.
View total days, business days, weeks, and months.
Key Features
- Calculate days, weeks, months, and business days between dates
- Accurate Gregorian calendar calculations
- Excludes weekends for business day count
- No registration or uploads
- Ideal for project planning and deadlines
About This Tool
Find the number of days, business days (Mon–Fri), weeks, and months between two dates with accurate Gregorian calculations. Use it for project planning, service‑level timelines, school schedules, or leave tracking—results update instantly as you pick dates. All computation is performed locally for privacy and reliability, so your data never leaves your device. Simple, accurate, and ideal for quick professional planning without opening a spreadsheet.
Frequently Asked Questions
No, it excludes weekends only. Add holidays manually to your count.
Gregorian calendar via date-fns.
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