GribBox is the private, no-install way to open and convert scientific data files — GRIB, NetCDF and HDF5 — right in your browser.
Drag a .grib2, .nc or .h5 file onto the page and explore its structure, preview values, and export to formats like CSV, JSON and GeoJSON. Everything runs locally with Rust compiled to WebAssembly, so your files never leave your device.
Why GribBox
- 100% local processing — your files are never uploaded, making it safe for unpublished research and confidential data.
- No install — no HDFView, Panoply, Python or wgrib2 required.
- Works on any device — Windows, macOS, Linux and even iPad.
Try it now
- Open and inspect a file in the GRIB viewer.
- Convert a forecast to a spreadsheet with GRIB to CSV.
- Get structured data for code with GRIB to JSON.
New to the format? Start with how to open a GRIB2 file. More tutorials and format support are on the way.
