HMP Converter
FileFlip converts HMP files into 14 other formats entirely inside your browser, using Assimp compiled to WebAssembly. The HMP file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert an HMP file?#
- Drop your HMP file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert HMP files online?#
Yes, because nothing is uploaded. FileFlip converts HMP files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a HMP file#
FileFlip converts HMP into 14 formats with Assimp, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | 3D Models |
|---|---|
| File extension | .hmp |
| FileFlip support | Read only, so it is a source rather than a target |
| Conversions available | 14 |
| Engines | Assimp |
| Downloaded to your browser | 11.2 MB on the first conversion, then cached |
What is an HMP file?#
An HMP file is a binary heightmap written for Conitec's 3D GameStudio engine, storing a rectangular grid of elevation values that the engine's Terrain Engine tessellates into landscape geometry at load time rather than shipping the triangles directly.
Use HMP when terrain needs to load directly into 3D GameStudio's Terrain Engine.
Convert HMP to a mesh format when the terrain needs to become explicit triangle geometry for an engine that doesn't understand GameStudio's heightmap format.
The HMP file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
HMP questions people ask#
What is an HMP file?
An HMP file is a heightmap for Conitec's 3D GameStudio engine, storing a grid of elevation values that the engine's Terrain Engine turns into landscape geometry when the level loads. It holds elevation data, not a finished mesh.
What software opens HMP files?
3D GameStudio and its level editor are essentially the only software built to read HMP files, since the format is specific to that engine's terrain system. There's no general-purpose 3D application that opens it natively.
Why would I convert an HMP file to a mesh format?
An HMP file only stores a grid of elevation values, and only 3D GameStudio knows how to turn that into terrain geometry. Converting it to a mesh format like OBJ tessellates the heightmap into actual triangles that other 3D software and game engines can load directly.