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. 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)"` `"2:3 (Portrait Photo)"` `"3:2 (Photo)"` `"3:4 (Portrait Standard)"` `"4:3 (Standard)"` `"9:16 (Portrait Widescreen)"` `"16:9 (Widescreen)"` `"21:9 (Ultrawide)"`
`megapixels`	Target total megapixels. 1.0 MP ≈ 1024x1024 for square (default: 1.0).	FLOAT	Yes	0.1 - 16.0
`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

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