Calculate the exact difference between two dates in days, weeks, months, and years. Free online date difference calculator with detailed breakdown.
The date difference calculator computes the exact time span between two dates, providing results in multiple units: total days, weeks, and a breakdown of years, months, and days. This is useful for project planning, age calculations, event countdowns, and historical date analysis.
Total Days = |End Date - Start Date|
Weeks = Days ÷ 7
Years/Months/Days = Sequential subtraction of date componentsThe total days are calculated by converting the millisecond difference between dates. The years, months, and days breakdown accounts for varying month lengths and leap years by performing sequential subtraction of date components.
| Input | Output |
|---|---|
| Jan 1, 2024 to Dec 31, 2024 | 365 days | 52 weeks | 11 months 30 days |
| Mar 15, 2023 to Sep 20, 2024 | 554 days | 79 weeks | 1 year 6 months 5 days |
| Jun 1, 2024 to Aug 15, 2024 | 75 days | 10 weeks | 2 months 14 days |