STL Quality Checker
Find common mesh problems before printing, including open edges, non-manifold geometry, duplicate triangles and orientation issues.
Check STL qualityInspectMesh
Free 3D File Tools
InspectMesh helps you inspect, measure and prepare 3D files for printing.
STL tools
Check the quality, shape, dimensions and material-volume estimates of STL models before printing.
Explore all STL toolsSTL Watertight Checker
Check whether an STL has a closed surface, open edges or possible holes.
Check watertightnessSTL Manifold Checker
Check whether an STL is closed and manifold, with clear counts for open edges, non-manifold edges and separate shells.
Check STL topologySTL Triangle Counter
Count triangles and understand mesh complexity before slicing or sharing.
Count STL trianglesSTL Dimensions Checker
Measure an STL, convert units, calculate proportional scaling and check whether it fits your printer.
Measure an STL fileSTL Volume Calculator
Calculate your model’s volume, convert units and estimate approximate material weight.
Calculate STL volume