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Free ARW to FITS Converter Online

Convert ARW files to FITS quickly and easily online. Upload files up to 2GB and download your converted files in just a few clicks.

Drag & drop your files

JPEG, PNG, PDF, and other formats, up to 2GB

Privacy Files stay private.

Privacy Automatically deleted after 24 hours.

Privacy 2GB upload limit.

4.8/5

Trusted for 1,794,705+ conversions

HOW IT WORKS

Convert ARW to FITS in three steps

Three steps, no account, nothing to install.

01

Upload ARW files

Drag and drop or upload ARW files you want to convert to FITS.

02

Convert to FITS

Select FITS as the output format and start the conversion.

03

Download

Download each FITS as it finishes, or grab everything as one zip. You can also share a link.

ARW

ARW files are raw image formats specific to Sony Alpha digital cameras, capturing unprocessed images for maximum editing flexibility. These files retain high-quality image data, making them ideal for professional photographers seeking optimal detail and color accuracy. ARW files require specialized software for editing, offering extensive control over exposure, white balance, and other parameters in post-processing.

FITS

FITS is a digital file format designed for the storage and transmission of scientific data, particularly in astronomy. Optimized for large datasets, it efficiently handles multi-dimensional arrays and metadata, making it indispensable for image and data analysis in telescopes and space missions. Its extensibility ensures compatibility across various platforms and software, securing its place as a vital tool in scientific research.

USE CASES

Use Cases for ARW to FITS

Here are day to day use cases of ARW to FITS

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Convert ARW astrophotography images for scientific analysis

Astronomers and astrophotographers convert Sony ARW raw files to FITS format to preserve maximum data integrity for photometric analysis, stacking multiple exposures, and processing with specialized astronomy software that requires the standardized FITS format.

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Prepare ARW telescope images for research publications

Researchers convert ARW files captured through telescopes to FITS format to meet the technical requirements of academic journals and research databases, ensuring their astronomical data is in an accepted standard for scientific community sharing and peer review.

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Process ARW deep-sky images with astronomy software

Amateur astronomers convert Sony ARW raw images to FITS to use with popular astrophotography processing tools like PixInsight, Siril, or AstroPixelProcessor, which rely on FITS format for advanced calibration, stacking, and enhancement of celestial objects.

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Archive astronomical observations in standard format

Observatories and educational institutions convert ARW files from digital cameras used for astronomy to FITS format for long-term archival, ensuring compatibility with future analysis tools and maintaining metadata integrity for scientific data preservation.

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Share ARW astro-images with research collaborators

Astronomy students and professionals convert Sony ARW files to FITS when sharing data with collaborators who use different analysis platforms, ensuring universal accessibility without losing critical astronomical metadata embedded in the raw files.

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Convert ARW files for planetary imaging analysis

Planetary imaging enthusiasts convert ARW video frames to FITS sequences to analyze planetary surfaces, atmospheric features, or lunar details using specialized software that requires FITS format for precise measurement and scientific documentation.

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Prepare ARW solar eclipse images for scientific measurement

Researchers and educators convert ARW images of solar eclipses to FITS format to enable precise photometric measurements, corona analysis, and scientific study using astronomy software tools that standardize on FITS for accurate data interpretation.

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Convert ARW files for variable star photometry

Amateur astronomers performing variable star research convert Sony ARW images to FITS format to use with photometry software like AIP4Win or MuniWin, which require FITS files for accurate brightness measurements and light curve generation.

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Process ARW comet tracking images in astronomy workflows

Comet observers convert ARW sequences to FITS format to integrate with comet analysis software, enabling precise tracking, magnitude determination, and coma analysis while maintaining the high dynamic range captured in the original raw files.

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Convert ARW lunar surface images for topographic study

Lunar researchers and educators convert high-resolution ARW images of the moon to FITS format for detailed topographic analysis, crater measurement, and surface feature documentation using specialized lunar imaging software.

MORE ARW TOOLS

Explore our other image operations

ARW files are raw image formats specific to Sony Alpha digital cameras, capturing unprocessed images for maximum editing flexibility. These files retain high-quality image data, making them ideal for professional photographers seeking optimal detail and color accuracy. ARW files require specialized software for editing, offering extensive control over exposure, white balance, and other parameters in post-processing.

Explore all tools

1.8M+

Files converted

and counting

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from our users

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Avg. conversion

per image

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Files kept

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WHY DRAGDROPDO

Built to be quick, safe, and free

dragdropdo offers seamless flexibility for managing files of any type. Whether it's PDFs, images, or zipped folders, we've got you covered.

Private by default

Files stay encrypted in transit and are automatically removed after 24 hours.

No install required

Run everything in the browser — no desktop app, no sign-up wall to start.

Cloud import

Pull files from Google Drive and keep working without local downloads first.

Share & download

Grab a zip or share a link / QR so teammates can pick up results on any device.

FAQ

Frequently Asked Questions

Answers to frequently asked questions about dragdropdo's ARW to FITS Converter.