Weeks Calculator
Calculate weeks between dates, find week numbers, and manage project timelines with support for ISO week standards and business planning.
Weeks Calculator
Calculate weeks between dates or get week information for any date
Project Week Management
Track project timelines and semester schedules in weeks
ISO Week Standard
Common Periods
Tips
How to Use the Weeks Calculator
Calculate Weeks Between Dates
- 1. Select "Weeks Between Dates" mode
- 2. Choose your preferred week standard
- 3. Enter start and end dates
- 4. Click "Calculate Weeks" to get results
- 5. View total weeks and remainder days
Get Week Information
- 1. Select "Week Information" mode
- 2. Choose your week standard
- 3. Select any date
- 4. Click "Get Week Info"
- 5. View week number and boundaries
Week Standards
• Sunday Start: US standard, week begins Sunday
• Monday Start: European standard, week begins Monday
• ISO 8601: International standard, Monday start
Use Cases
• Project timeline management
• Academic semester planning
• Business quarter tracking
• Sprint and agile planning
Frequently Asked Questions
What is the difference between ISO and regular week numbers?
ISO 8601 weeks always start on Monday and the first week of the year is the one that contains at least 4 days of January. Regular weeks can start on Sunday or Monday depending on the standard.
How do I calculate project weeks?
Use the project management feature to add your project with start and end dates. The calculator will show total weeks, current week, and progress percentage.
Can I use this for academic planning?
Yes! The calculator is perfect for academic planning. Use semester presets or create custom academic periods to track weeks and progress.
What about partial weeks?
When calculating weeks between dates, the calculator shows both total weeks and remainder days for complete accuracy.