Date Calculator
Add or subtract days, weeks, months, and years from any date with business days mode.
- 100% free
- Private in browser
- No signup
- No watermarks
Calculated Date
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About Date Calculator
Find exact past or future dates with Date Calculator on TheToolss. Easily add or subtract days, weeks, months, and years from any starting date. Features a business days mode to calculate project deadlines and delivery dates while automatically skipping Saturday and Sunday weekends. 100% private in-browser tool.
How to use Date Calculator
- Select a starting calendar date (defaults to today).
- Choose whether to Add (+) or Subtract (-) time.
- Enter the number of years, months, weeks, and days.
- Optionally check "Exclude Weekends" for working business days.
- View the exact target date and day of the week.
Key features
- Add and subtract years, months, weeks, and days
- Exclude weekends (business working days mode)
- Full date formatting with day of the week
- Leap year verification and tracking
- 100% private in-browser client execution
Frequently asked questions
- How does business days calculation work?
- When "Exclude Weekends" is checked, the calculator counts only Monday through Friday, skipping Saturdays and Sundays until the target number of days is fulfilled.
- Is Date Calculator free?
- Yes. Calculate dates and project milestones free without signing up.
- What do I need to enter?
- Just Start Date, Years, Months, Weeks and Days. Every field has a sensible default you can start from.
- Is my data uploaded anywhere?
- No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
- Does it work on a phone?
- Yes. The layout adapts to small screens and needs no app or signup.
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