ORF → FITS · Windows

Convert ORF to FITS

Batch convert ORF RAW files to FITS in one run. reaConverter handles entire photo libraries with the same settings applied throughout.

Tired of converting ORF files one at a time? reaConverter processes entire folders to FITS automatically. Handles large batches reliably without crashes or timeouts. RAW files convert with full color and quality control, ensuring zero degradation.

DownloadORF to FITS ConverterConvert
ORF to FITS
Online
.orf.FITS
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .orf Images to .fits?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting ORF files in under two minutes. reaConverter also includes editing tools: resize, crop, rotate, and more.

reaConverter logo
Install reaConverter

2. Load your ORF files

Load your ORF files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your ORF files into reaConverter

3. Select FITS as output format

Select FITS from 800+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select FITS as output format

4. Start ORF to FITS conversion

Then simply press the Convert button and your conversion will begin in no time!

Start Conversion

Once the conversion is complete, you can find your FITS files in the destination folder you selected.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your ORF files into FITS in seconds - all photos processed on your PC for maximum privacy and speed.

Download reaConverter

Technical note

How ORF and FITS differ in practice

ORF files hold unprocessed sensor data, so white balance and exposure are still adjustable. Converting to FITS bakes those decisions into the pixels, and highlight recovery is no longer available afterwards. Set white balance and exposure before the run rather than after.

Power Features

Do more with your images

Converting ORF images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

Image editing tools
Image editing

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 25, 2026
reaConverter makes FITS conversion incredibly easy. We batch convert astronomical images to standard formats for presentations and analysis, all automated through the command-line. It’s fast, reliable, and handles large datasets without issues.
Laura N.
Laura N.
Astrophysics Research Assistant
Essential for our astroimaging pipeline! reaConverter perfectly handles FITS files from our research telescope, preserving all WCS coordinates and photometric data during batch conversion to TIFF. Now we process 100+ deep-sky exposures nightly without losing critical metadata for our exoplanet studies!
Joseph Wilson
Joseph Wilson
Satisfied Customer
An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!
Logan B.
Logan B.
Satisfied Customer
I use the online converter — it’s quick and hassle-free!
Jian Wong
Jian Wong
Happy Online User
Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!
Helen Evans
Helen Evans
Satisfied Customer
Finally an app that actually opens my weird files! Saves me from format frustration daily.
Kyle Brooks
Kyle Brooks
Happy User

FAQ

ORF to FITS Conversion

What are ORF files?

ORF is an image file extension associated with RAW images captured with Olympus cameras. While most amateur photographers prefer shooting in a more accessible format, like JPEG or TIFF, which includes predefined features to correct aspects such as lack of brightness, color depth or noise, professionals mostly choose to shoot in RAW mode. Though ORF images can be up to 6 times larger than JPEGs or other compressed formats, they include a significantly larger number of options to add digital adjustments and change the image according to how the author wants.

What are FITS files?

The FITS (Flexible Image Transport System) format is a standard format used particularly for storing, transferring and processing scientific images from fields such as astronomy. FITS was first launched as an open standard in the early 1980s and has gone through several subsequent upgrades. FITS files contain not just images, but also data related to photometry and spatial calibration, and information about the origin of the image. Similar formats include FIT and FTS.

Can reaConverter convert ORF to FITS?

Yes! reaConverter instantly converts .orf to .fits with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert ORF photos directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert ORF to FITS online?

If you only need to convert a few ORF files to FITS format, feel free to try our free online free online ORF to FITS converter — perfect for small batches with no installation needed!

How can I turn ORF files into FITS on my computer?

The best way to change ORFs to FITSs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from ORF to FITS.

How can I automate ORF to FITS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert ORF files to FITS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line orf to fits converter for batch processing.

What else can I do with reaConverter?

Convert Gerber imagesConvert picture color spaceConvert vector imagesChange image DPIConvert CAD formats

Related conversions

Other ways to convert ORF files, and other sources that convert to FITS.

ORF to JPGORF to TIFFORF to PNGDCS to FITSDNG to FITSDRF to FITS
All ORF conversionsAll FITS conversions

Discover More

Beyond format conversion

Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

DownloadreaConverterPurchase

Free trial · Windows 10/11 · v8.0.253 · Files never leave your computer

reaConverter software