File Hash Checker Free Online — MD5, SHA-1, SHA-256, SHA-512
Why File Hashing Matters
Software downloads, firmware updates, and database backups can be corrupted in transit or storage. A hash is a fingerprint — if even one byte changes, the hash changes completely. Comparing the downloaded file's hash against the publisher's expected hash confirms integrity. This is standard practice for Linux ISOs, npm packages, and database dumps.
Supported Hash Algorithms
MD5: fastest, 128-bit hash. Deprecated for security but still widely used for non-security integrity checks. SHA-1: 160-bit hash. Deprecated for security use but common in legacy systems. SHA-256: the current standard for most security-sensitive applications. SHA-512: higher collision resistance for critical applications. All algorithms run client-side using the Web Crypto API.
Comparing Hashes
Paste the expected hash into the comparison field. The tool highlights matches (green) and mismatches (red) character by character. Case-insensitive comparison handles both uppercase and lowercase hex strings. This is the correct way to verify a downloaded ISO, software package, or backup file.
Frequently Asked Questions
Verify file hash free
Compute MD5, SHA-256, and more — private, browser-based, instant.
Open File Hash Tool