STL VOLUME CALCULATOR

Calculate STL volume online

Load an STL to calculate its enclosed solid volume from the mesh geometry. Your file stays in this browser and is not uploaded.

Drop an STL file here or choose a file from your device Binary and ASCII STL · up to 150 MB · processed locally

How STL volume calculation works

STLPad calculates the volume enclosed by the triangles in your STL mesh and displays the result in cubic centimeters. STL files usually do not contain reliable unit metadata, so the result assumes the coordinates represent millimeters.

Open or non-manifold geometry can make an enclosed volume unreliable. Use STL Checker to review mesh health before relying on the number. For the model's X, Y and Z size, use the STL Dimensions Checker.

Private browser-based STL tools

Your selected STL is read and analyzed locally in your browser. No account is required and the file is not uploaded. For interactive inspection, use the STL Viewer.