LZMA to RAR Converter
Convert LZMA to RAR online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
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What is an LZMA file?
The LZMA (Lempel-Ziv-Markov chain Algorithm) format is a lossless data compression algorithm and file format developed by Igor Pavlov and first featured in the 7-Zip archiver in 1998. It utilizes a dictionary compression scheme somewhat similar to LZ77 but with significant improvements via a range encoder and complex probability models, resulting in high compression ratios comparable to PPM (Prediction by Partial Matching). The raw .lzma stream format typically includes a 13-byte header defining properties like dictionary size (up to 4 GB) and uncompressed size, often used within .7z or .xz containers rather than as standalone files.
How to open an LZMA file
LZMA files are natively supported on Linux distributions via the lzma command-line utility or the xz-utils package. On Windows and macOS, native support is absent, requiring third-party archival software. 7-Zip is the primary reference implementation for decoding LZMA streams on Windows; alternatively, multi-format extractors like PeaZip or The Unarchiver (macOS) utilize the LZMA SDK to decompress the data.
LZMA Technical Info
- Full Name
- Lempel-Ziv-Markov chain Algorithm
- Developed By
- Igor Pavlov
- Initial Release
- 1998
- MIME Type
- application/x-lzma
What is a RAR file?
RAR (Roshal Archive) is a proprietary archive file format developed by Eugene Roshal that supports data compression, error recovery, and file spanning. It utilizes a variation of the LZSS algorithm with a sliding window size of up to 4 MB (in RAR4) or 1 GB (in RAR5), combined with Huffman coding. Key technical features include support for AES-256 encryption, BLAKE2sp hash algorithms for file integrity, and specialized recovery records that allow for the reconstruction of damaged data. The format structure supports solid archiving, where multiple files are treated as a single continuous data stream to improve compression ratios.
How to open a RAR file
Due to the proprietary nature of the RAR licensing, creating RAR files requires licensed software (WinRAR), though extraction is supported by various free tools. Windows users typically use WinRAR or 7-Zip to extract contents. macOS users can utilize The Unarchiver or Keka. On Linux, the non-free unrar package or the open-source 7z (p7zip-full) package provides extraction capabilities via the command line.
RAR Technical Info
- Full Name
- Roshal Archive
- Developed By
- Eugene Roshal
- Initial Release
- 1993
- MIME Type
- application/vnd.rar
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Developer API
Convert LZMA to RAR via API
Automate LZMA to RAR conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "lzma-to-rar",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "rar"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.lzma
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.