LHA to 7Z Converter
Convert LHA 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 LHA file?
The LHA format (originally known as LHarc) is a lossless compressed archive container developed by Haruyasu Yoshizaki in 1988. It implements the Lempel-Ziv-Huffman (LZH) algorithm, a hybrid compression method combining LZ77 sliding-window dictionary compression with static Huffman coding for entropy encoding. Historically significant on Amiga and MS-DOS platforms and remaining a standard in Japanese software distribution, the format utilizes a header structure containing file attributes, timestamps, and a 16-bit Cyclic Redundancy Check (CRC-16) to verify data integrity across compressed volumes.
How to open an LHA file
Native support for the LHA architecture is generally absent in modern operating system kernels such as Windows 10/11 or macOS Ventura. To access the contents, users must employ third-party extraction utilities capable of parsing the LZH algorithm. 7-Zip is the recommended solution for Windows environments; macOS users should utilize The Unarchiver for extraction. On Linux distributions, the lha or lzh command-line utilities can be installed via package managers like APT or RPM to handle decompression.
LHA Technical Info
- Full Name
- LHA Compressed Archive
- Developed By
- Haruyasu Yoshizaki
- Initial Release
- 1988
- MIME Type
- application/x-lzh-compressed
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 LHA to 7Z via API
Automate LHA 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": "lha-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 "$UPLOAD_URL" --upload-file input.lha
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$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.