Central Tools

Free Date Difference Calculator - Calculate Days Between Dates

Calculate the difference between two dates instantly. Free online date calculator to find days, weeks, months, and years between any two dates.

Common Use Cases

Project Planning: Calculate project durations and deadlines
Event Countdown: Days until birthdays, weddings, or holidays
Age Difference: Calculate age gaps between people
Historical Events: Time since significant dates
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How to use Free Date Difference Calculator - Calculate Days Between Dates

1

Enter the start date

2

Enter the end date

3

View the difference in multiple formats

4

See breakdown in years, months, days, weeks, and hours

Why use this tool?

Multiple Units

View difference in various time units

Precise Calculation

Accounts for leap years and month lengths

Flexible

Works with past, present, and future dates

Free Date Difference Calculator - Calculate Days Between Dates

Quickly find the exact duration between any two dates in history or the future. Calculate time spans in total days, weeks, months, or years. Perfect for project management, tracking event countdowns, calculating loan durations, or measuring relationship milestones. Precise, fast, and easy to use.

Quick How-To Guide

  1. 1Enter the Start Date for the calculation
  2. 2Enter the End Date to find the duration between them
  3. 3OR use the "Add/Subtract" mode to calculate a future/past date
  4. 4View the result immediately in multiple formats (e.g., "1 year 2 months" and "425 days")
  5. 5Copy the result to your clipboard for your notes or project plans

Why use our tool?

Flexible units—get results in total days, or a combination of years, months, and days
Include/Exclude end date—optional setting to include the last day in the count
Date arithmetic—easily add or subtract days/months/years from a specific start date
Working days—option to exclude weekends for business-related duration tracking
Historical precision—works with dates spanning hundreds of years with full accuracy
Privacy-locked—your dates are never uploaded or stored on our servers

Frequently Asked Questions

Find answers to common questions about using our tool, its features, and how it handles your data privacy.

The calculator uses the Gregorian calendar, which means a standard year has 365 days and leap years have 366 days. The tool automatically detects leap years between your start and end dates for 100% accuracy.
Yes! Our tool allows you to exclude Saturdays and Sundays from the count, which is essential for project timelines and payroll calculations.
This tool focuses on calendar dates and assumes the dates are in the same time zone. For precise global timing (including hours and minutes across cities), we recommend using our Time Zone Converter.
Simply set the start date to "Today" and the end date to your event date. The tool will give you the exact countdown in days, weeks, and months.
You can calculate differences for dates thousands of years apart. Our algorithm is based on the standardized Unix timestamp and Gregorian calendar logic, which handles extreme date ranges reliably.
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