Free Online Calendar 2026 & 2027
Need to quickly check a date, find what day of the week a date falls on, or look up public holidays? This free online calendar works for any year — past or future — and automatically adapts to your location.
Auto-Detects Your Country & Timezone
The calendar uses the Intl API built into your browser to detect your timezone, locale, and country. Month names, day names, and date formats are displayed in your language. The week starts on the correct day for your region — Monday in Europe and most of Asia, Saturday in the Middle East, Sunday in the US.
Public Holidays for 100+ Countries
Holidays are fetched from the Nager.Date API for 100+ countries worldwide, with local fallback computations for core countries. Supported regions include:
- Americas — United States, Canada, Mexico, Brazil, Argentina, Colombia, and more
- Europe — United Kingdom, Germany, France, Spain, Italy, Netherlands, and 30+ more
- Asia-Pacific — India, Japan, South Korea, China, Australia, New Zealand, Singapore, and more
- Middle East & Africa — UAE, Saudi Arabia, South Africa, Egypt, Nigeria, and more
Holiday data includes dynamic dates like Easter Monday, Thanksgiving, Labour Day, and locale-specific observances. The country list updates automatically as new countries are added upstream.
Add Personal Events
Click any date and add events with custom color coding. Events are saved in your browser's localStorage and persist across sessions.
Week Numbers & Year Overview
Toggle ISO week numbers for business planning. Switch to the Year view to see all 12 months at a glance with mini calendars, event counts, and today's date highlighted.
Weekend Highlighting & Day-of-Year
Weekends are visually distinct with colored day numbers. When you select a date, you see the ISO week number and day-of-year (e.g., "Day 73 of 365") for quick reference.
Related Tools
Find the exact gap between two dates with the Date Difference Calculator, calculate your precise age with the Age Calculator, or convert times across zones with the Time Zone Converter.