FITS to RAS for Image Workflows
Fast, instant FITS to RAS conversion. No signup required. Just drop your .fits file and get .ras in seconds.
Batch Settings
About FITS to RAS Conversion
Whether you're one of the many photographers, designers, and content creators who work with FITS files daily, there comes a time when you need RAS instead. FITS is a widely used file format.
Here's a typical scenario: you receive a .fits file but your project, platform, or client requires .ras. RAS is a widely used file format. Rather than searching for desktop software or wrestling with command-line tools, you can convert FITS to RAS online in seconds with CocoConvert.
This conversion is ideal when you When you need a RAS file. The conversion helps you convert between formats quickly.
Converting FITS to RAS maintains high quality with CocoConvert's optimised encoder settings.
Behind the scenes, CocoConvert uses industry-standard tools — FFmpeg for audio and video, Sharp for images, qpdf for documents. Your file is uploaded securely (TLS encryption), processed on isolated servers in Germany, and auto-deleted within 24 hours. No account, no watermark, no hidden fees.
Power users can batch convert up to 100 files simultaneously with a Pro subscription, making it practical for production workflows.
How to Convert FITS to RAS
- 1
Drop your file
Drag your .fits file onto the converter. Need to process many files? Add up to 5 at once (100 for Pro).
- 2
Set output to RAS
Pick RAS from the format list. The converter automatically tunes settings for the FITS→RAS pair.
- 3
Hit Convert
Processing happens server-side — your browser stays responsive. Most image files convert in under 10 seconds.
- 4
Download and use
Your .ras file is ready to plug into your workflow. Download it or share the link (expires in 24 hours).
What Happens When You Convert FITS to RAS
Your FITS file is decoded and re-encoded as RAS.
Your FITS file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in RAS format
The converted file is ready for download
Format Comparison
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
RAS
.ras file
| Extension | .ras |
| MIME Type | image/x-sun-raster |
| Category | Image |
Should You Convert FITS to RAS?
When to Convert
- ✓When you need a RAS file
Frequently Asked Questions
Who needs to convert FITS to RAS?
This conversion is commonly used by photographers, designers, and content creators. Typical reasons include convert between formats quickly and ensuring compatibility with downstream tools or platforms.
Can I convert FITS to RAS without losing quality?
Converting FITS to RAS maintains high quality with CocoConvert's optimised encoder settings.
Do I need to install software to convert FITS to RAS?
No. CocoConvert runs entirely in your browser — no downloads, no plugins. It works on macOS, Windows, Linux, iOS, and Android.
How many FITS files can I convert at once?
Free users can convert up to 5 files per hour. Pro subscribers get 100 files per hour with larger size limits (5 GB per file). Business API users can integrate batch conversion directly into their tools.
Is there an API for FITS to RAS conversion?
Yes. CocoConvert offers a Business API for automated conversions. It supports all the same format pairs available in the web interface, including FITS to RAS.
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