Batch MD5 Hash Calculator

Q: What is the MD5 hash format?

The output is a 32-character hexadecimal string, e.g. b225644c6e2537f2e2c11816419e43e5.

Q: How is MD5 different from SHA-256?

\text{MD5} generates a 128-bit hash; \text{SHA-256} generates 256-bit, offering stronger collision resistance.

Free tool to instantly calculate MD5 hashes for one or more files.

This free MD5 file hash generator lets you calculate 32-character hashes directly in your browser. Simply upload or drag and drop one or more files to generate unique MD5 checksums instantly. Whether you’re verifying download integrity, detecting tampering, or comparing backups, this tool offers fast, secure, and private file hashing using Web Crypto API or WASM—no data ever leaves your device.

How It Works

To calculate MD5 hashes, click the upload area or drag & drop your file(s). Then click Calculate MD5 to see each file’s name, size, and 32-character hash below.

Local computation with Web Crypto API or WASM
Supports one or more files
Secure & private

What is an MD5 Hash?

MD5 (Message-Digest Algorithm 5) produces a fixed 128-bit hash value (32-digit hex) from any input data.

Verifies file integrity
Detects corruption or tampering
Used in digital signatures

Note: MD5 is not collision-resistant; use SHA-256 for stronger security.

Use Cases

💾 Verifying software downloads
🛡️ Checking system files for tampering
📁 Identifying duplicate backups
📊 Monitoring data integrity during transfers

Batch File Support

Select one or more files at once to compute hashes in a single batch. Results are clearly listed for quick review.

Frequently Asked Questions (FAQ)

Is my file uploaded to a server?

No. All hashing is done locally in your browser; no file ever leaves your device.

What file types are supported?

Supports all file types—documents, images, videos, archives. Hash is generated from binary content.

How do I hash multiple files at once?

Simply select or drag one or more files; the tool will batch-compute each file’s MD5 hash and list the results.

What is the MD5 hash format?

The output is a 32-character hexadecimal string, e.g. b225644c6e2537f2e2c11816419e43e5.

How is MD5 different from SHA-256?

$\text{MD5}$ generates a 128-bit hash; $\text{SHA-256}$ generates 256-bit, offering stronger collision resistance.

References

R. Rivest : : RFC 1321 - The MD5 Message-Digest Algorithm (1992) )1992( via IETF
https://www.ietf.org/rfc/rfc1321.txt
Marc Stevens et al. : : MD5 Collision Demo (2009) )2009( via Cryptology ePrint Archive
https://eprint.iacr.org/2009/223