# Mandelbulb3D/Reference/File Formats/M3F

### M3F Formula File edit

.M3F is the native format for Mandelbulb3D formula definitions. A formula is the mathematical "DNA" of a fractal. It determines what parameters exist and how users can interact with them.

The Mandelbulb3D default installation includes hundreds of formulas, found in the `M3Formulas`

folder. New formulas are being developed by volunteers. Fractalforums.com, the birthplace of the Mandelbulb, is still the place to go for new formulas.

### See Also edit

### External Links edit

- New formulas by DarkBeam at FractalForums.com