Open .root Files Online — Free ROOT Viewer
Open ROOT File Online — Free & Instant
No signup required. Works in your browser.
📁 Drag & drop your file here
or click to browse • Max 100MB
✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install
What Is a .root File?
A .root file is a scientific format known as ROOT. ROOT Data File This format is created by CERN and is widely used by researchers and academics.
ROOT files contain structured scientific data that requires compatible software to open. With OpenAnyFile, you can analyze and visualize .root files directly in your browser without installing any software.
How to Open .root Files Online
- Visit OpenAnyFile ROOT page
- Drag and drop your .root file onto the upload area, or click "Browse" to select it
- OpenAnyFile automatically detects the ROOT format using magic byte analysis
- View, analyze, and analyze and visualize your file contents in the browser
- Optionally convert to CSV, JSON or download
Software That Opens .root Files
.root files are primarily created by CERN. In the scientific space, you may encounter .root files from third-party tools, online converters, or export functions. Regardless of the source, OpenAnyFile handles them all.
Open .root on Different Platforms
- Windows: Use the original software or upload to OpenAnyFile for instant access
- macOS: Preview may not support .root — use OpenAnyFile as a universal viewer
- Linux: Open-source alternatives exist, or use OpenAnyFile in any browser
- Mobile (iPhone/Android): OpenAnyFile works on all mobile browsers
Common .root File Problems
Version compatibility
Other common issues include: your OS not recognizing the file extension, the file appearing corrupted after download, or lacking the required software. OpenAnyFile bypasses all these issues with universal format detection.
Convert ROOT to Other Formats
ROOT files can be converted to 2 formats including CSV, JSON.
Related Scientific Formats
If you work with .root files, you may also encounter these scientific formats:
- ABAQUS_INP (.inp) — Open & convert .inp files online
- ABF (.abf) — Open & convert .abf files online
- ABINIT (.abi) — Open & convert .abi files online
- AMBER (.prmtop) — Open & convert .prmtop files online
- Amber Topology (prmtop) — Open & convert prmtop files online
- Amber Trajectory (mdcrd) — Open & convert mdcrd files online
- ANSYS_MECH (.mechdat) — Open & convert .mechdat files online
- ANTEX (.atx) — Open & convert .atx files online
- ASC_LTSPICE (.asc) — Open & convert .asc files online
- ASYMPTOTE (.asy) — Open & convert .asy files online
Popular ROOT Conversions
Frequently Asked Questions
What is a .root file?
A .root file is a scientific format called ROOT. ROOT Data File
How do I open a .root file without installing software?
Upload your .root file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .root files?
.root files are typically created by CERN.
Can I convert .root to another format?
Yes. OpenAnyFile converts .root to CSV, JSON.
Is it safe to open .root files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .root on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.