Resolution Calculator by Steve Lasmin

A simple ComfyUI custom node that calculates output width and height from a maximum resolution, aspect ratio, and a block-size multiplier.

Author: Steve Lasmin
Support: https://boosty.to/stevelasmin

Features

• Set a maximum resolution (total pixel budget)
• Define aspect ratio via two separate integer fields (e.g., 16 and 9)
• Choose a multiplier from a dropdown: 16, 32, or 64 (default: 32)
• Outputs two integers: width and height, both divisible by the selected multiplier

Perfect for:

• Creating Empty Latent Image nodes with exact dimensions
• Resizing images before diffusion while keeping aspect ratio locked
• Ensuring dimensions are compatible with VAE/UNet block sizes

Installation

1. Navigate to your ComfyUI/custom_nodes/ directory
2. Clone this repository:

   git clone https://github.com/Eklipsis/resolution_calculator_by_steve_lasmin.git
   

3. Restart ComfyUI

Usage

The node appears under utils → Resolution Calculator by Steve Lasmin.

| Parameter | Description | |-----------|-------------| | resolution | Maximum total pixels (width × height) | | width_ratio | Aspect ratio width component | | height_ratio | Aspect ratio height component | | multiplier | Block size (16, 32, or 64). Default: 32 |

Example

• Resolution: 1024
• Width ratio: 16
• Height ratio: 9
• Multiplier: 32

Result: width = 1088, height = 608

File Structure

resolution_calculator_by_steve_lasmin/
├── __init__.py
├── nodes.py
├── README.md
├── LICENSE
├── .gitignore
└── pyproject.toml

License

This project is licensed under the Creative Commons Attribution-NoDerivatives 4.0 International License.

• ✅ Free to use (personal and commercial)
• ✅ Free to share
• ❌ Modifications and derivative works are not allowed without permission

See LICENSE for full terms.

To request permission for modifications, contact: [email protected]

Support

If you find this node useful, consider supporting the author:
https://boosty.to/stevelasmin