LZMA to 7Z Converter
Convert LZMA to 7Z 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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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 7z file?
The 7z format is a compressed archive container created by Igor Pavlov in 1999, characterized by an open architecture and high compression ratios utilizing the LZMA and LZMA2 algorithms. It supports file sizes up to 16 exbibytes (2^64 bytes), Unicode file names, and strong AES-256 encryption, with solid compression capabilities to enhance efficiency for similar file sets. Distributed under the GNU LGPL, the format's modular design accommodates various pre-processing filters and encryption methods, establishing it as a primary standard for high-efficiency data archival.
How to open a 7z file
While Windows 11 builds utilizing the libarchive project offer native support, earlier Windows versions require the official open-source 7-Zip utility or alternatives like WinRAR and PeaZip for extraction. macOS users typically rely on third-party software such as The Unarchiver or Keka, whereas Linux distributions handle 7z archives via the p7zip package accessed through the command line or GUI managers like File Roller.
7z Technical Info
- Full Name
- 7z Archive Format
- Developed By
- Igor Pavlov
- Initial Release
- 1999
- MIME Type
- application/x-7z-compressed
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Developer API
Convert LZMA to 7Z via API
Automate LZMA to 7Z 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-7z",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "7z"
},
"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.