Year Calendar with Week Numbers
A printable calendar with week numbers (calendar by week) for better planning and organization. Perfect for project management, scheduling, and tracking your yearly activities.
Calendar Products
2025 Calendar with Week Numbers
Monday start weekly calendar (calendario por semana).
$2.99
2026 Calendar with Week Numbers
Monday start weekly planner (calendario semana).
$2.99
2025 Coloring Calendar
12 unique designs with week numbers, full of fun and ready-to-be coloring.
$3.99
See more Calendars
Mini square calendars, Kids calendars, more years, and more options for calendario de semana.
Understanding Calendars with Week Numbers
A calendar with week numbers (also known as a weekly calendar or calendario por semana) is a powerful tool for time management and planning. Unlike traditional calendars that focus only on months and days, these calendars highlight the progression of weeks throughout the year, giving you a better perspective on time passing.
The ISO 8601 standard defines how week numbers are calculated internationally. According to this standard, the first week of the year (Week 1) is the week containing the first Thursday of the year. This means that Week 1 always includes January 4th. This standardization helps with global scheduling and planning consistency.
Our calendars by week display each week with its corresponding number (1-52 or sometimes 53), making it easier to:
- Plan projects that span multiple weeks
- Schedule recurring weekly events
- Track progress through quarters and fiscal periods
- Coordinate with international teams who use week numbers
- Reference specific weeks instead of date ranges in communications
The current week number is displayed prominently at the top of our calendar, allowing you to instantly know where you are in the year's progression. This is particularly useful for project planning, academic scheduling, and production timelines.
Benefits of Calendars with Week Numbers
Better Project Planning
Week numbers make it easier to plan projects that span multiple weeks or months. Reference specific weeks instead of date ranges.
International Standard
Week numbers follow the ISO standard (ISO-8601) used globally for business and organizational planning.
Consistent Scheduling
Use week numbers (calendario en semanas) for recurring tasks or meetings that happen on a weekly basis throughout the year.
Progress Tracking
Easily track progress through the year with clearly marked week numbers. Know exactly which week of the year you're in.
Frequently Asked Questions About Weekly Calendars
What is a calendar with week numbers?
A calendar with week numbers (also called calendar by week or calendario por semana) displays each week of the year with its corresponding number from 1-52/53. This helps with planning, scheduling, and organizing activities on a weekly basis throughout the year.
How are week numbers calculated?
Our calendars use the ISO-8601 standard for week numbering. The first week of the year is the week containing the first Thursday of the year. This ensures that week 1 always has at least 4 days in the new year.
What's the difference between Monday-start and Sunday-start calendars?
Monday-start calendars (common in Europe and international business) begin the week on Monday and end on Sunday. Sunday-start calendars (common in the US) begin on Sunday and end on Saturday. Our weekly calendars (calendario semana) primarily use the Monday-start format.
How can I track which week of the year we're in?
Our calendar with week numbers (calendario en semanas) clearly displays the current week at the top of the page. You can use this to track deadlines, plan projects, or organize your schedule according to weekly periods throughout the year.
Can I print these calendars for personal use?
Yes! You can download and print our free calendar with week numbers for personal use. For professional or commercial use, we recommend purchasing one of our premium calendar products (calendario de semana).
Do you offer calendars in different languages?
Yes, we offer calendars in multiple languages including English and Spanish (calendario de semana). If you need a specific language version, please contact us.