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)" "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 (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

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