ComfyUI Random Number Generator

A simple and efficient custom node for ComfyUI that generates random numbers between two user-selectable values. Perfect for seed variation, parameter randomization, and workflow experimentation.

Features

• 🎲 Generate random integers and floats simultaneously
• 🔄 Seed control for reproducible results
• 📊 User-selectable min/max range with decimal support
• ⚡ Lightweight - uses only Python standard library
• 🎯 Appears in Logic/Math category for easy access

Installation

Via ComfyUI Manager (Recommended)

1. Open ComfyUI Manager in your ComfyUI interface
2. Search for "Random Number"
3. Click Install
4. Restart ComfyUI

Manual Installation

1. Navigate to your ComfyUI custom nodes directory:

   cd ComfyUI/custom_nodes/

2. Clone this repository:

   git clone https://github.com/warfy5/ComfyUI-RandomNumbers.git

3. Restart ComfyUI

Usage

Finding the Node

• Method 1: Double-click on the canvas and search for "Random Number"
• Method 2: Right-click → Logic → Math → Random Number

Node Inputs

Input	Type	Default	Description
min_value	FLOAT	0.0	Minimum value (inclusive)
max_value	FLOAT	999999.0	Maximum value (inclusive)
seed	INT	0	Random seed for reproducibility

Node Outputs

Output	Type	Description
int	INT	Integer random value
float	FLOAT	Float random value

Example Use Cases

1. Random Seed Generation

• Set min=0, max=9999999
• Use the int output to feed into KSampler seed inputs
• Change the node's seed parameter to get different random seeds

2. Parameter Variation

• Set min=0.5, max=1.5 for denoise strength variation
• Set min=5.0, max=15.0 for CFG scale randomization
• Use the float output for continuous parameters

3. Reproducible Randomness

• Set a specific seed value (e.g., 42)
• Same seed always produces the same random number
• Perfect for reproducible workflows and testing

How It Works

The node uses Python's built-in random module with seed control:

1. If min_value > max_value, they are automatically swapped
2. The seed is set for reproducible randomization
3. A float value is generated using random.uniform()
4. An integer value is created by converting the float
5. Both values are output simultaneously

Requirements

• ComfyUI
• Python 3.8 or higher
• No additional dependencies required

Troubleshooting

Node doesn't appear in menu:

1. Check that the folder is in ComfyUI/custom_nodes/
2. Verify the folder name is ComfyUI-RandomNumber
3. Restart ComfyUI completely
4. Check console for any Python errors

Getting the same number every time:

• This is expected behavior when using the same seed
• Change the seed parameter to get different results
• The seed parameter is what makes results reproducible

Version History

v1.0.0 (2025-01-XX)

• Initial release
• Basic random number generation with int/float outputs
• Seed control for reproducibility
• Min/max range selection

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

Do whatever you want with it licence. Thanks for checking though.

Credits

Created for the ComfyUI community.

Support

If you encounter any issues or have suggestions:

• Open an issue on GitHub
• Check existing issues for solutions

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