File Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for any file. Verify file integrity and detect tampering with cryptographic checksums.
Click to upload or drag and drop
Any file type, any size
Upload a file to generate hashes
Complete Privacy
Files never leave your computer.
No Size Limit
Process files of any size with chunked reading and progress tracking.
Hash Verification
Compare generated hashes with expected values to verify integrity.
Common Use Cases
Verify Downloaded Software
Compare the hash of downloaded software with the official hash to ensure it hasn't been tampered with.
Check File Integrity
Verify that files haven't been corrupted during transfer or storage.
Detect Duplicate Files
Identify duplicate files by comparing their hashes, even if filenames differ.
ISO Image Verification
Verify Linux distributions and other ISO images before installation.
Digital Forensics
Create cryptographic proof of file contents for legal or security purposes.
Frequently Asked Questions
What is a file hash?
A file hash (or checksum) is a unique fixed-length string generated from a file's contents using cryptographic algorithms. Even a tiny change to the file produces a completely different hash, making it useful for verifying file integrity and detecting tampering.
What hash algorithms are supported?
This tool generates four types of hashes: MD5 (128-bit), SHA-1 (160-bit), SHA-256 (256-bit), and SHA-512 (512-bit). SHA-256 and SHA-512 are considered more secure for cryptographic purposes, while MD5 and SHA-1 are still commonly used for file verification.
How do I verify a file's integrity?
After generating hashes for your file, paste the expected hash (from the software publisher or download site) into the comparison field and click Compare. The tool will indicate whether your file matches the expected hash, confirming the file hasn't been corrupted or tampered with.
Is there a file size limit?
No, this tool can process files of any size. Large files are processed in chunks with a progress indicator, ensuring smooth operation even for multi-gigabyte files. Your files never leave your computer for complete privacy.
Is my file uploaded to a server?
No, all hash calculations are performed entirely in your browser using the Web Crypto API. Your files never leave your computer, ensuring complete privacy and security.
Which hash algorithm should I use?
For security-sensitive applications, use SHA-256 or SHA-512. For simple file verification and duplicate detection, MD5 or SHA-1 are sufficient. Most modern software publishers provide SHA-256 hashes.
What does a hash mismatch mean?
A hash mismatch indicates that the file's contents differ from what was expected. This could mean the file was corrupted during download, modified, or potentially tampered with. You should re-download the file or verify its source.