What is File Hash Checker?
File Hash Checker calculates cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) for files to verify integrity. Compare hashes to ensure files have not been modified or corrupted during download or transfer.
Common Use Cases
Download Verification
Verify downloaded files match the original by comparing hash values.
File Integrity
Detect file corruption or unauthorized modifications by checking hashes.
Security Audits
Verify software integrity against published checksums from vendors.
Backup Validation
Ensure backed up files match originals by comparing hash values.
How to Use This Tool
- Drag and drop a file or click to select one
- View calculated hashes for multiple algorithms
- Compare against an expected hash value
- Copy hashes for documentation or verification
Frequently Asked Questions
Which hash algorithm should I use?
SHA-256 is recommended for security. MD5 is faster but vulnerable to collisions. Match the algorithm used by the source.
Is my file uploaded anywhere?
No! All hash calculations happen locally in your browser. Your files never leave your device.
What is a hash collision?
A collision occurs when different files produce the same hash. SHA-256 makes collisions computationally infeasible.
Why do my hashes not match?
Different hashes mean the file has been modified, corrupted, or you are using a different algorithm than the source.