# Week Numbers

> FullCalendar v4 documentation, for an old release. Web version: https://legacy.fullcalendar.io/v4/week-numbers
>
> Latest version (v7): https://fullcalendar.io/docs/week-numbers.md

Display week numbers in various parts of your calendar views.

## Articles

- [weekNumbers](https://legacy.fullcalendar.io/v4/weekNumbers.md) - Determines if week numbers should be displayed on the calendar.
- [weekNumbersWithinDays](https://legacy.fullcalendar.io/v4/weekNumbersWithinDays.md) - Determines the styling for week numbers in Month and DayGrid views.
- [weekNumberCalculation](https://legacy.fullcalendar.io/v4/weekNumberCalculation.md) - The method for calculating week numbers that are displayed with the weekNumbers setting.
- [weekLabel](https://legacy.fullcalendar.io/v4/weekLabel.md) - The heading text for week numbers. Also affects weeks in date formatting.

## Demos

- [Week numbers activated](https://legacy.fullcalendar.io/v4/weekNumbers-demo)
- [weekNumbersWithinDays activated](https://legacy.fullcalendar.io/v4/weekNumbersWithinDays-demo)