Online Date Difference Calculator

Calculate days, weeks, months and years between two dates. Perfect for planning, project management, and personal use.

Calculate Now
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days between dates
Detailed Breakdown
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years
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months
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weeks
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days
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hours
Common Date Calculations
Today + 1 Week

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Today + 30 Days

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Today + 1 Year

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Multiple Calculations

Calculate days, weeks, months, years, or business days between dates.

Flexible Options

Include/exclude end date, swap dates, or set today with one click.

Privacy Focused

All calculations happen in your browser - we never see your data.

How to Use Our Date Calculator

1 Select Dates

Choose your start and end dates using the date picker or by typing the dates manually in MM/DD/YYYY format.

2 Choose Calculation Type

Select whether you want to calculate total days, business days (excluding weekends), or get a breakdown in years, months and days.

3 Set Preferences

Choose whether to include the end date in the calculation (counts as a full day).

4 View Results

See the total duration along with a detailed breakdown in different time units.

Tips for Date Calculations

Project Planning
  • Use business days calculation for work deadlines
  • Add buffer days for unexpected delays
  • Track milestones with the detailed breakdown
Personal Use
  • Countdown to special events and holidays
  • Track age in years, months and days
  • Calculate time since important life events

Frequently Asked Questions

How accurate is the date difference calculation?
Our calculator is highly accurate, accounting for leap years and varying month lengths. The automatic calculation gives the most precise results by considering all calendar variations.
What's the difference between calendar days and business days?
Calendar days include all days (weekends and holidays). Business days exclude weekends (Saturday and Sunday) by default. Some industries may have different definitions of business days.
Why are there different results for months and years calculations?
Months and years have varying lengths (28-31 days for months, 365-366 days for years). Our calculator accounts for these variations to give precise results based on the actual calendar dates.
Can I calculate time between dates in the past?
Absolutely! The calculator works for any dates, past or future. Just enter your desired start and end dates, regardless of their order in time.
How does the "include end date" option work?
When checked, the end date counts as a full day. For example, from Monday to Wednesday with this option checked is 3 days (Monday, Tuesday, Wednesday). Unchecked, it's 2 days (Monday to Tuesday).
Can I calculate time in hours or minutes?
Yes! The detailed breakdown includes hours between dates. For minutes or seconds, you would need to multiply the hours result (1 hour = 60 minutes = 3600 seconds).

About TodayBestLegitWays.com

TodayBestLegitWays.com is committed to providing reliable, easy-to-use online tools that help people with their daily tasks and planning needs.

Our Date Difference Calculator was developed to help individuals and professionals quickly calculate time spans between dates for planning, project management, and personal organization.

All our tools are free to use, with no registration required, and we prioritize user privacy in everything we build.

Why Use Our Date Calculator?

Multiple Calculation Types

Calendar days, business days, or detailed breakdowns in years/months/days.

Flexible Options

Include/exclude end date, swap dates, or set today with one click.

Detailed Results

Get total days plus breakdown in years, months, weeks, and hours.

Privacy Focused

All calculations happen in your browser - we never see your data.