Date Calculator
Find days between two dates
How This Date Calculator Works
Our free Date Calculator finds the exact difference between any two dates in years, months, weeks, and days. It also shows total days, total hours, total minutes, and working days (excluding weekends) - making it perfect for project planning, deadline tracking, and date math.
The calculator handles month length variations (28-31 days), leap years, and correctly computes differences across any time span from a single day to hundreds of years.
How Date Differences Are Calculated
The calculator uses a multi-step approach:
- Total days: Calculate the millisecond difference between dates and convert to days.
- Years & months: Count complete years, then remaining months, then remaining days.
- Weeks: Divide total days by 7 for complete weeks plus remainder.
- Working days: Count only Monday through Friday between the dates.
Example: From January 1 to March 15, 2026 = 2 months, 14 days = 73 total days = 10 weeks, 3 days = 52 working days.
Common Uses
- Project deadlines: Calculate how many working days remain until a deadline.
- Contract durations: Find the exact length of a lease, contract, or subscription.
- Age verification: Use with our Age Calculator for precise age calculations.
- Event planning: Count days until a wedding, holiday, or special occasion.
- Payroll: Calculate working days for salary and paycheck calculations.
Frequently Asked Questions
Related tools: Age Calculator to find your exact age, Countdown Calculator for live event countdowns, or Time Duration Calculator for time differences.
Feel free to browse if anything stands out.
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