Multi-Hash Checker

Calculate and verify file integrity using MD5, SHA1, SHA256, and SHA512 hash algorithms. Upload files securely to generate checksums or verify against expected values.

Hash History & Statistics
Drag & drop your file here
or click to browse (Max 100MB)
MD5
Fast but cryptographically broken. Suitable for checksums but not security.
Low
SHA-1
Faster than SHA-2 but cryptographically weakened. Deprecated for security use.
Low
SHA-256
Strong cryptographic hash. Good balance of security and performance.
High
SHA-512
Very strong cryptographic hash. Slower but maximum security.
Very high
Calculating hashes...
Upload file to verify
Select the file you want to verify
Paste the hash value you want to verify against (case insensitive)
Batch Processing: Upload multiple files or provide a list of file paths for bulk hash calculation. (Coming soon in the next update)

About Hash Algorithms & File Integrity

What are hash algorithms?

Hash algorithms are mathematical functions that convert input data (like files) into fixed-length strings called hash values or checksums. These values act as unique "fingerprints" for files - even tiny changes to a file result in completely different hash values.

Why verify file integrity?

File integrity verification ensures that files haven't been corrupted, modified, or tampered with during transfer or storage. This is crucial for:

  • Security professionals - Verifying downloaded software and detecting malware
  • System administrators - Ensuring backup integrity and detecting data corruption
  • Software developers - Validating build artifacts and distribution packages
  • Digital forensics experts - Maintaining evidence integrity and chain of custody
  • Content creators - Verifying file transfers and preventing data loss

Understanding the algorithms

MD5 Low

Fast but cryptographically broken. Suitable for checksums but not security.

128-bit output | Speed: Very fast
SHA-1 Low

Faster than SHA-2 but cryptographically weakened. Deprecated for security use.

160-bit output | Speed: Fast
SHA-256 High

Strong cryptographic hash. Good balance of security and performance.

256-bit output | Speed: Medium
SHA-512 Very high

Very strong cryptographic hash. Slower but maximum security.

512-bit output | Speed: Slow

How to use this tool

  1. Calculate Hashes: Upload a file to generate hash values for all supported algorithms
  2. Verify Hash: Upload a file and enter an expected hash value to verify integrity
  3. Choose Algorithms: Select which hash algorithms to calculate based on your security needs
  4. Copy Results: Use the copy buttons to easily share or store hash values
  5. Export Data: Download results in text, JSON, or CSV format for documentation
Security Best Practices
  • Use SHA-256 or SHA-512 for security-critical applications
  • MD5 and SHA-1 are deprecated for security use but still useful for checksums
  • Always verify hashes from the original source (official websites, documentation)
  • Compare the full hash value - partial matches are not secure
  • Store hash values separately from the files they verify