SamplingPercentToSigma - ComfyUI Built-in Node Documentation

Converts a sampling percentage into the matching sigma value using the selected model’s sampling settings.

Converts a sampling percentage into the matching sigma value using the selected model’s sampling settings. It maps a percentage between 0.0 and 1.0 onto the model’s noise schedule, and can optionally return the model’s true maximum or minimum sigma at the two end points.

Inputs

Parameter	Description	Data Type	Required	Range
model	The model containing the sampling parameters used for the conversion	MODEL	Yes	-
sampling_percent	The sampling percentage to convert to a sigma value (default: 0.0)	FLOAT	Yes	0.0 to 1.0 (step: 0.0001)
return_actual_sigma	Return the actual sigma value instead of the value used for interval checks. This only affects results at 0.0 and 1.0. (default: False)	BOOLEAN	Yes	-

When return_actual_sigma is enabled, a sampling_percent of 0.0 returns the model’s maximum sigma value (sigma_max), and a sampling_percent of 1.0 returns the minimum sigma value (sigma_min). For all other percentages, the result is the same whether or not this option is enabled.

Outputs

Output Name	Description	Data Type
sigma_value	The sigma value corresponding to the input sampling percentage	FLOAT

This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub

---

Source fingerprint (SHA-256): 30decf1d4804accbdf2a70eba1a773b41ef0e09cfb74f2a9388044dadf0a1ac1