---
title: "Denoise Strength — ComfyUI Glossary & Node Definition"
description: "Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling). Learn how Denoise Strength works inside ComfyUI node workflows on Windows."
canonical: https://comfy.ink/words/denoise-strength
updated: 2026-10-17
---

# Denoise Strength

Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling).

## Facts (2026-10-17)

- **Term:** Denoise Strength
- **In Short:** Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling).
- **Applies To:** ComfyUI SD 1.5, SDXL, Flux & Video

## Definition: Denoise Strength

Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling).

Setting denoise below 1.0 preserves the structure of an encoded input image, making it the primary slider for img2img refinement, FaceDetailer passes, and Ultimate SD Upscale.

## How to tune this in your ComfyUI workflow

Every parameter in ComfyUI is exposed directly on its node rather than hidden behind global settings tabs. You can inspect or override this behavior per pass in [ComfyUI Studio](https://comfy.ink/studio).

New to node graphs? Grab the Windows installer at [/download](https://comfy.ink/download) and open a built-in template from the workflow menu.

## FAQ

### What does Denoise Strength do in ComfyUI?

Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling). Setting denoise below 1.0 preserves the structure of an encoded input image, making it the primary slider for img2img refinement, FaceDetailer passes, and Ultimate SD Upscale.

### Where do I adjust this setting on the canvas?

Check the corresponding loader or [KSampler](https://comfy.ink/nodes/ksampler) widget in your active workflow graph.

## Related

- [ComfyUI Glossary](https://comfy.ink/words)
- [KSampler & KSampler (Advanced)](https://comfy.ink/nodes/ksampler)
- [ComfyUI Studio Workspace](https://comfy.ink/studio)
- [ComfyUI VRAM Requirements for SDXL, Flux & Video (6GB–24GB)](https://comfy.ink/guides/comfyui-vram-requirements-guide)
- [Latent Space & LATENT Pin](https://comfy.ink/words/latent-space)

## Download

Free desktop app: [Download Comfy](https://comfy.ink/download)

Markdown mirror: https://comfy.ink/words/denoise-strength.md