Open and convert scientific data files in your browser
GribBox opens and converts GRIB, NetCDF and HDF5 files right in your browser.
100% local — your files never leave your device. No install, no upload, no sign-up.
👇 Drop a GRIB file below to start instantly — everything runs locally in your browser
🔒 Your file is processed entirely in your browser — it never leaves your device.
Key Features of GribBox
Everything you need to open, inspect and convert scientific data files in the browser.
GRIB & GRIB2 Viewer
Open GRIB and GRIB2 files and inspect every message, variable and metadata field.
NetCDF & HDF5 Support
Read NetCDF and HDF5 datasets in the same private, browser-based workflow.
Format Conversion
Convert to CSV, JSON and GeoJSON — and between scientific formats — locally.
100% Local & Private
Rust-to-WASM parsing keeps every byte on your device. No upload, ever.
No Install, Cross-Device
Runs in any modern browser on Windows, macOS, Linux and iPad — nothing to install.
Built for Large Files
A background Web Worker decodes big datasets without freezing the interface.
GRIB Tools
Open a dedicated, full-page tool for each task — no upload, no install.
Frequently Asked Questions About GribBox
Have another question? Reach out by email.