Dome Calculator

The Monolithic Dome Institute Spherical Dome Calculator helps calculate common design elements of a partial sphere set on an optional stem wall. It helps with quick design ideas and provides accurate measurements when finalizing structural elements. Outputs include circumference, surface area, volume, and distances along and around the building’s various details. A level input measures a slice of the structure. For example, it can calculate the area of a second floor, show headroom around the dome perimeter, or calculate the volume and surface area of a portion of the dome.

All inputs are stored in the page URL, which may be bookmarked, stored in notes, or shared with others. Click the copy to clipboard button to quickly copy results to paste into emails, messages, or research notes. Print the page or save as a PDF for a professional copy of the drawing and results.