3D Printing & Maker Tools

STL Volume Calculator

Use STL Volume Calculator free in your browser. No account required; your input is processed locally in your browser.

Runs locallyYour inputs stay in your browser.
Workspace
Drop files here or browse your deviceBrowse files.STL
HOW IT WORKS

Calculate STL mesh volume

Parse the triangular mesh and sum signed tetrahedron volumes.

STL trianglesmm³ + cm³Runs locally
01STL triangles
02Signed tetrahedral volume sum
03mm³ + cm³

1000 mm³ is reported as 1 cm³.

GOOD TO KNOW

Reliable volume assumes a properly enclosed mesh

Open, self-intersecting or inconsistently oriented meshes can produce misleading geometric volume results.

02

In short

What exactly does it do?

Parse the triangular mesh and sum signed tetrahedron volumes.

Example?

1000 mm³ is reported as 1 cm³.