Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.SRA
File Type
Sequence Read Archive
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .sra file format
The SRA (Sequence Read Archive) file format is a specialized data container developed by the National Center for Biotechnology Information (NCBI) for the storage and distribution of high-throughput sequencing data. It is the primary format used by the International Nucleotide Sequence Database Coll…
File extension
.SRA
File type
Sequence Read Archive
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .sra file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .sra.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .sra file?
File extension details and usage information
The SRA (Sequence Read Archive) file format is a specialized data container developed by the National Center for Biotechnology Information (NCBI) for the storage and distribution of high-throughput sequencing data. It is the primary format used by the International Nucleotide Sequence Database Collaboration (INSDC) to archive raw sequencing reads from various next-generation sequencing (NGS) platforms, including Illumina, Ion Torrent, Pacific Biosciences, and Oxford Nanopore. The format is designed to handle massive datasets efficiently by employing a sophisticated compression algorithm that reduces the storage footprint of genomic sequences, quality scores, and associated metadata. Unlike flat text files, SRA files are structured to allow for rapid access to specific data subsets. To use these files in standard bioinformatics pipelines, researchers typically use the SRA Toolkit to extract the data into more common formats like FASTQ or SAM. This format plays a critical role in reproducible science, allowing researchers worldwide to download and re-analyze raw genomic data from published studies stored in public repositories.
Software Compatibility
Programs that may open or work with .sra files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .sra files be converted?
Options for saving or exporting this file to another format
In many cases, a .sra file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .sra file.
Why can't I open a .sra file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .sra format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .sra files
To open a .sra file, use software that supports this file format.
- SRA Toolkit (via WSL)
- CLC Genomics Workbench
- NCBI SRA Explorer (Web-based)
- SRA Toolkit
- Geneious Prime
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .sra file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.