> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-docs-cms-changelog-node-lifecycle.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ResolutionSelector - ComfyUI Built-in Node Documentation

> The Resolution Selector node calculates pixel width and height based on a chosen aspect ratio and a target total resolution in megapixels.

The Resolution Selector node calculates pixel width and height based on a chosen aspect ratio and a target total resolution in megapixels. It is useful for generating consistent dimensions for other nodes, such as the Empty Latent Image node.

## Inputs

| Parameter      | Description                                                                                                                   | Data Type           | Required | Range                                                                                                                                                                                                                 |
| -------------- | ----------------------------------------------------------------------------------------------------------------------------- | ------------------- | -------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `aspect_ratio` | The aspect ratio for the output dimensions (default: `"1:1 (Square)"`).                                                       | COMBO               | Yes      | `"1:1 (Square)"`<br />`"2:3 (Portrait Photo)"`<br />`"3:2 (Photo)"`<br />`"3:4 (Portrait Standard)"`<br />`"4:3 (Standard)"`<br />`"9:16 (Portrait Widescreen)"`<br />`"16:9 (Widescreen)"`<br />`"21:9 (Ultrawide)"` |
| `megapixels`   | Target total megapixels. 1.0 MP ≈ 1024x1024 for square (default: 1.0).                                                        | FLOAT               | Yes      | 0.1 - 16.0 (step: 0.1)                                                                                                                                                                                                |
| `preview`      | Live preview of the calculated output resolution. This read-only widget updates automatically and does not accept user input. | RESOLUTION\_PREVIEW | No       | N/A                                                                                                                                                                                                                   |
| `multiple`     | Nearest multiple of the result to set the selected resolution to (default: 8).                                                | INT                 | No       | 8 - 128 (step: 4)                                                                                                                                                                                                     |

## Outputs

| Output Name | Description                                                      | Data Type |
| ----------- | ---------------------------------------------------------------- | --------- |
| `width`     | Calculated width in pixels multiplied by the selected multiple.  | INT       |
| `height`    | Calculated height in pixels multiplied by the selected multiple. | INT       |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/ResolutionSelector/en.md)

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