Convert FITS Files Online — 4 Format Options
Convert FITS 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
About FITS Files
FITS (.fits) is a science file format developed by NASA/IAU. FITS stores astronomical image and table data.
It is commonly used by professionals to open and inspect files in professional and personal workflows. With OpenAnyFile, you can convert your .fits files to 4 different formats directly in your browser — no software installation required.
How to Convert FITS Files — Step by Step
- Upload your file — Drag and drop your .fits file into the converter above, or click "Browse" to select it from your device. Files up to 50MB are supported.
- Automatic detection — OpenAnyFile identifies the FITS format using magic byte signature analysis (not just the file extension), ensuring accurate format recognition.
- Select target format — Choose from 4 supported output formats. Popular choices include PNG, JPG, CSV.
- Convert instantly — Processing happens in the cloud and typically takes just a few seconds, even for large files.
- Download your file — Once conversion is complete, download your converted file immediately. Files are automatically deleted after 1 hour for security.
Why Convert FITS Files?
Email attachments have size limits, and .fits files can be large. Converting to a compressed or optimized format makes sharing via email or cloud storage much faster.
- Universal Compatibility: Not everyone has software that opens .fits files. Converting to a universal format like PDF, JPG, or PNG ensures anyone can access your content on any device.
- Smaller File Size: Some target formats offer better compression, reducing file size by up to 80% for easier sharing via email or cloud storage.
- Easier Editing: Convert to an editable format to modify content that may be locked or read-only in .fits format.
- Long-term Archiving: Convert to standardized formats (PDF/A, TIFF, PNG) for reliable long-term storage and future accessibility.
- Web Publishing: Convert .fits to web-friendly formats for use in websites, social media, or online presentations.
All FITS Conversion Options (4 Formats)
Below is the complete list of formats you can convert .fits files to using OpenAnyFile:
- FITS to PNG — Convert your .fits file to PNG format online, fast and free
- FITS to JPG — Convert your .fits file to JPG format online, fast and free
- FITS to CSV — Convert your .fits file to CSV format online, fast and free
- FITS to TIFF — Convert your .fits file to TIFF format online, fast and free
Tips for Best Conversion Quality
Batch conversion is available for Pro users — convert multiple .fits files at once to save time on large projects.
OpenAnyFile uses professional-grade conversion engines to ensure maximum quality. Common issues with .fits files include: Specialized format for astronomy.
FITS Format Details
| Property | Value |
|---|---|
| Format Name | FITS |
| File Extension | .fits |
| Category | Science |
| Developer | NASA/IAU |
| Conversion Targets | 4 formats |
Frequently Asked Questions
Can I convert .fits files online for free?
Yes. OpenAnyFile lets you analyze and preview .fits files for free. You can convert up to 3 files per day on the free plan. Unlimited conversions are available with Pro.
What formats can I convert .fits to?
FITS can be converted to 4 formats including PNG, JPG, CSV, TIFF. Each conversion preserves quality and formatting as much as the target format allows.
Is it safe to convert .fits files online?
Absolutely. Files are processed securely using HTTPS encryption and automatically deleted after conversion. We never store your file contents permanently. Your data stays private.
Do I need software to convert .fits?
No. OpenAnyFile works entirely in your browser — no downloads or installations needed. It works on Windows, Mac, Linux, iOS, and Android devices.
How long does FITS conversion take?
Most .fits files convert in under 10 seconds. Larger files (over 50MB) may take up to 30 seconds depending on the target format and complexity.
Can I convert multiple .fits files at once?
Yes, batch conversion is available for Pro users. Upload multiple .fits files and convert them all to the same target format simultaneously.
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