3D Convert 3D file converters that run in your browser
Drop a file, get another format back. Conversion happens entirely on your machine — nothing is uploaded to a server.
Converters
Mesh converter
OBJ, STL, PLY, OFF and glTF/GLB, in any direction. Keeps normals, colour and texture coordinates wherever the target format supports them.
✓ AvailableE57 → PLY
Convert ASTM E57 point clouds to binary PLY. Streams large terrestrial surveys with low memory.
✓ AvailableCAD converters
CAD interchange tools without sending drawings to the cloud.
PlannedWhy local?
Scan and CAD files are often confidential and huge. A server upload is slow, risky, and expensive. These tools decode and write files with the Web APIs already in your browser — so your data stays on your machine.
Size is not the limit
Nothing is ever fully loaded. Files are read through a sliding window and written out as they are decoded, so peak memory follows the batch size rather than the file size — a 900 MB mesh converts to a 2.3 GB STL in about a minute using a few hundred megabytes of memory. When a model is too large even to index in memory, vertices are staged on disk instead.