---
title: dayNarrowWidth
---

When a day column becomes narrower than this pixel width, FullCalendar switches to "narrow" date text/layout variants.

<div class='spec'>

number of pixels, undefined

</div>

This affects responsive day text in views with day columns (such as DayGrid, TimeGrid, and MultiMonth), and is reflected by `isNarrow` in related render-hook arguments.