--- title: Ease In, Ease Out, and Everything Between | daily.dev description: CSS easing functions are the same Bézier handles designers already use in the pen tool — they just bend time instead of a shape. The four numbers in... canonical: https://daily.dev/posts/ease-in-ease-out-and-everything-between-gk1jf4ks3 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Ease In, Ease Out, and Everything Between | daily.dev og:description: CSS easing functions are the same Bézier handles designers already use in the pen tool — they just bend time instead of a shape. The four numbers in... og:url: https://daily.dev/posts/ease-in-ease-out-and-everything-between-gk1jf4ks3 og:image: https://api.daily.dev/og/posts/gk1Jf4ks3.png og:image:alt: Ease In, Ease Out, and Everything Between og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Ease In, Ease Out, and Everything Between **[Creative Design Technologist](https://daily.dev/sources/carmenansio)** · 7 min read · 6 upvotes · 3 comments ## Summary CSS easing functions are the same Bézier handles designers already use in the pen tool — they just bend time instead of a shape. The four numbers in cubic-bezier() represent two control point positions: x1,y1 for the handle leaving the start and x2,y2 for the one arriving at the end. The article explains how easing maps to traditional animation timing charts, demystifies the ease-in/ease-out/ease-in-out keywords (showing their exact cubic-bezier equivalents), and gives a practical rule: use ease-out for entrances, ease-in for exits, and ease-in-out for moves between visible positions. It also covers overshooting and windup effects by pushing handles outside the unit square, and closes with the prefers-reduced-motion media query as a non-negotiable baseline. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@devmount** · 0 upvotes > I always love playing around with animations 😍 Also a good reminder to never forget adding `@media (prefers-reduced-motion: reduce)` **@agustinbarrientos** · 0 upvotes > So that’s why `ease-in` entrances always feel wrong. ## Similar posts on daily.dev - [CSS easing functions: what cubic-bezier actually does](https://daily.dev/posts/css-easing-functions-what-cubic-bezier-actually-does-2uoqsmrtl) · Flavio Copes · 12 upvotes · 1 comments - [Level up CSS transitions with cubic-bezier](https://daily.dev/posts/level-up-css-transitions-with-cubic-bezier-gzpgsdnvg) · RUBYLAND · 5 upvotes · 0 comments --- Tags: [#css](https://daily.dev/tags/css) [View this post on daily.dev](https://daily.dev/posts/ease-in-ease-out-and-everything-between-gk1jf4ks3) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Ease In, Ease Out, and Everything Between","url":"https://daily.dev/posts/ease-in-ease-out-and-everything-between-gk1jf4ks3","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/ease-in-ease-out-and-everything-between-gk1jf4ks3"},"datePublished":"2026-07-08T12:32:19.611Z","dateModified":"2026-07-08T12:32:43.567Z","description":"CSS easing functions are the same Bézier handles designers already use in the pen tool — they just bend time instead of a shape. 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