Days Between Dates Calculator
Count the exact number of days, weeks, months, and years between any two dates. Includes business days option.
Start Date
End Date
💡 Definition
Date Difference
- Counting days between dates requires accounting for varying month lengths (28-31 days) and leap years.
- This tool gives exact calendar days, business days (Mon-Fri), weeks, and a year/month/day breakdown.
📖 How to use
Step by Step
- Select a start date in the first panel
- Select an end date in the second panel
- The difference appears in multiple units below
- Click 'Today' to set end date to current date
🎯 Use cases
When to use
- Project timeline estimation
- Calculating contract or lease durations
- Counting work days between dates
- Event countdown calculations
Frequently Asked Questions
How are business days counted?▾
Business days exclude Saturdays and Sundays. This tool counts only Monday through Friday. It does not account for public holidays as those vary by country.
Does it handle dates across years?▾
Yes. The calculator works correctly across year boundaries, leap years, and any date range you enter.