Ultra Fractal is distributed with only a small number of standard formulas. Additional formulas are available from the online formula database. It contains thousands of fractal formulas, coloring algorithms, and transformations written by Ultra Fractal users.

To download and install the formulas from the online database, simply click Update Public Formulas on the File menu in Ultra Fractal (Ultra Fractal menu on Mac) and follow the instructions.

You can also download the public formula files manually here:

Download Weekly Formula Pack (500 KB)
The Weekly Formula Pack contains any formula file that was updated within the past seven days.
Download Monthly Formula Pack (500 KB)
The Monthly Formula Pack contains any formula file that was updated within the past thirty days.
Download Complete Formula Pack (12515 KB)
The Complete Formula Pack contains all of the formula files in the entire library.

If you download these files yourself, you will need to unpack the contents and place them in your Formulas/Public folder.

Documentation for formulas that use classes is available at ultrafractal.com/formulas/reference.

All rights reserved. Copyright © 1997-2025 Frederik Slijkerman
Formula files: Copyright © 1997-2025 their respective authors.
Formula Database: code Copyright © 1999-2009 Damien M. Jones.