DATE CALCULATOR

This is a multi-functional Date and Age Calculator suite designed for web interfaces.

1. Days Between Two Dates

This is the primary tool for determining the exact span of time between two specific points in history or the future.

• Core Function: It calculates the total duration between a "Start Date" and "End Date." Unlike simple calendars, it breaks the result down into multiple units like years, months, weeks, and total days.

• How to Use:

  1. Select your two dates using the date picker.

  2. Use the Exclude Weekends dropdown if you only want to count Monday through Friday (ideal for HR or project management).

  3. Click Calculate Duration.

  4. Pro Tip: Use the "Quick Preset" chips (e.g., "Last 90 Days") to populate the fields instantly.

2. Add or Subtract from a Date

Designed for calculating deadlines or looking back at specific historical intervals, this function acts as a "time travel" tool for your calendar.

• Core Function: It takes a base date and applies a specific amount of time (years, months, days, hours, or minutes) to find a resulting date.

• How to Use:

  1. Input your Start Date.

  2. Choose your Operation (Add or Subtract).

  3. Enter the numerical values in the corresponding boxes (e.g., Add 2 Years and 3 Months).

  4. Hit Calculate Date to see the final timestamp.

3. Business Days Calculator

This section is tailored for professional environments where weekends and holidays don't count toward productivity or delivery timelines.

• Core Function: It either counts the working days between two dates or identifies what the date will be after a set number of business days.

• How to Use:

  1. Choose your mode: Count or Add.

  2. If counting, enter the start and end dates.

  3. To account for specific office closures, type in Public Holidays (in YYYY-MM-DD format) separated by commas. The tool will automatically skip these dates in its calculation.

4. Age Calculator & Milestones

A specialized tool for personal data, providing more depth than a simple "years old" calculation.

• Core Function: It computes an individual's exact age (down to the day) and generates a list of upcoming chronological milestones.

• How to Use:

  1. Enter the Date of Birth.

  2. (Optional) Enter a Target Date if you want to know how old someone was (or will be) on a specific day in the future.

  3. The results will display the current age and a countdown to the next birthday.

5. Quick Date Reference & Month Info

A "cheat sheet" for common date queries and calendar logistics.

• Core Function: Provides an instant snapshot of common dates (like "30 days from now") and allows users to inspect the properties of any specific month.

• How to Use:

  1. Quick Reference: Check the grid for automated updates on common time jumps.

  2. Custom Quick-Date: Enter a number (e.g., 45) and a direction (Past/Future) to find that specific date relative to today.

  3. Month Info: Select a month and year to instantly find out how many days it contains and what day of the week it starts on.

Track important dates for the current year. Use this reference to plan your projects, construction schedules, or material deliveries around public holidays.

2026 U.S. Federal Holidays

2026 Public Holidays in Canada