MO Viewer

Open or drop a Gaussian cube file (.cube / .cub)
No file loaded yet. Drop a Gaussian cube file (molecular orbital or density, from ORCA's orca_plot, Gaussian's cubegen, etc.) onto the field above, or click it to browse.
Click an atom to toggle its label

Orbital isosurface

0.060
0.90
+ −

Toggle a lobe off to show only the positive or negative phase. The isovalue slider uses a log scale — read the exact value on the right.

Molecule

8%
0.07 Å
Show legend

View

Show axes

Overlays a small X/Y/Z axis indicator (red/green/blue) that rotates with the molecule, matching the x/y/z axes of the loaded cube file.

Elements

Keep H on heteroatoms

When H is hidden below, H atoms bonded to a non-carbon atom (N–H, O–H, metal–H, …) stay visible anyway.

Load a file to adjust per-element radius and color.

Settings

Saves/loads the isosurface, molecule, and element controls above as a JSON file.