Manual counting
Count the number of days between the dates, then divide by 7 for weeks or by 30/365 for months and years. We do the same thing programmatically so you can trust the display even for long spans.
Calculator
Date Difference
Days, weeks and timeline insight between two dates.
Result
Total days0
Weeks0
Months0
11/13/2025
0 days
11/13/2025Years0
Hours0
Minutes0
Bar highlights up to one calendar year for quick comparisons.
Guide
How the Date Difference Calculator Works
We convert both dates to UTC, subtract the start from the end and then present the result in days, weeks, months and years. The visual timeline helps you understand how large the span is relative to a calendar year.
- Handles leap years and daylight-saving changes by using UTC.
- Shows timeline fill so you can compare spans at a glance.
- Breaks totals into smaller units for planning and documentation.
Timeline bar
The highlighted bar caps at one calendar year so you can quickly see whether the span is short (less than a month) or stretches across seasons. For longer spans we still show total days, weeks and months numerically.
Why it matters
Duration math powers project plans, legal deadlines, visa applications and personal milestones. Knowing the exact span prevents missed filings and gives stakeholders a single reference point.