> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# 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](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/SamplingPercentToSigma/en.md)

***

**Source fingerprint (SHA-256):** `30decf1d4804accbdf2a70eba1a773b41ef0e09cfb74f2a9388044dadf0a1ac1`


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.