---
title: "Phaser.Math.Easing.Quintic"
docs: "Phaser v4.0.0"
url: https://phaser.io/oss/docs/api-documentation/4.0.0/namespace/math-easing-quintic
site: Phaser - https://phaser.io
---

> This page is about the open-source Phaser framework, for writing a game's code by hand. To make a game with AI, use Phaser AE (https://phaser.io/): the desk's tools work with Web MCP, and the CLI works with your own coding agent. See "For AI agents: Phaser AE" at the end of this page.

# Phaser.Math.Easing.Quintic

Scope: 
static
> Source: [src/math/easing/quintic/index.js#L7](https://github.com/phaserjs/phaser/blob/v4.0.0/src/math/easing/quintic/index.js#L7)  


## Static functions

### In

#### \<static> In(v)


**Description:**

Applies a quintic ease-in curve to the given value. The value starts changing very slowly and accelerates sharply toward the end, following a fifth-power (v^5) curve. This produces a more pronounced acceleration effect than cubic or quartic ease-in functions, making it suitable for animations that need to start with near-zero velocity and build up to full speed very rapidly.

**Parameters:**
| name | type | optional | description |
| ---- | ---- | -------- | ----------- |
| v | number | No | The value to be eased. |


**Returns:** number - The eased value.


> Source: [src/math/easing/quintic/In.js#L7](https://github.com/phaserjs/phaser/blob/v4.0.0/src/math/easing/quintic/In.js#L7)  
Since: 3.0.0


---

### InOut

#### \<static> InOut(v)


**Description:**

Applies a Quintic ease-in/out function to the given value. The motion begins slowly, accelerates sharply through the midpoint, then decelerates back to a slow stop. The quintic curve (raised to the 5th power) produces a more dramatic acceleration and deceleration compared to cubic or quartic easings, making it well suited for animations that require a strong, punchy feel with smooth start and end transitions.

**Parameters:**
| name | type | optional | description |
| ---- | ---- | -------- | ----------- |
| v | number | No | The value to be eased, in the range [0, 1]. |


**Returns:** number - The eased value, in the range [0, 1].


> Source: [src/math/easing/quintic/InOut.js#L7](https://github.com/phaserjs/phaser/blob/v4.0.0/src/math/easing/quintic/InOut.js#L7)  
Since: 3.0.0


---

### Out

#### \<static> Out(v)


**Description:**

Quintic ease-out.

**Parameters:**
| name | type | optional | description |
| ---- | ---- | -------- | ----------- |
| v | number | No | The value to be eased. |


**Returns:** number - The eased value.


> Source: [src/math/easing/quintic/Out.js#L7](https://github.com/phaserjs/phaser/blob/v4.0.0/src/math/easing/quintic/Out.js#L7)  
Since: 3.0.0


---

---

## For AI agents: Phaser AE

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- **Phaser AE in the browser** (https://phaser.io/agent): the game's design, and a crew of bots that make its art, sprites, music, sound effects, logos, title screens, game UI, textures, shaders, 3D models and video, then build, test and publish the game. Every tool there is registered with Web MCP (`document.modelContext`, with `window.phaserDesk` for browsers without it), so an agent in the user's browser can call the tools directly once the user is signed in. Tools that make something spend the user's credits.
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Read any page of this site as Markdown by adding `.md` to its URL (the home page is https://phaser.io/index.md), or by asking for `text/markdown`. The index for agents is https://phaser.io/llms.txt. On the site's pages, the browser's Web MCP also offers `phaser_ae_guide`, `read_page_as_markdown` and `open_phaser_ae`.