What is a hash function?

A hash function takes an input of any size and produces a fixed-length string of characters called a hash value or digest. The same input always produces the same hash, but even a tiny change in the input produces a completely different hash. Hash functions are used for data integrity verification, password storage, and digital signatures.

MD5 is no longer considered secure for cryptographic purposes such as password hashing or digital signatures because collision attacks have been demonstrated. However, MD5 is still widely used for non-security purposes like checksum verification and data deduplication. For security-sensitive applications, use SHA-256 or SHA-512.

What is the difference between SHA-256 and SHA-512?

SHA-256 produces a 256-bit (64-character hex) hash while SHA-512 produces a 512-bit (128-character hex) hash. SHA-512 provides a larger output and higher security margin but is slightly slower on 32-bit systems. On modern 64-bit processors, SHA-512 can actually be faster than SHA-256.

Hash Generator — MD5, SHA-256 Online

Hash Generator Online

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files.

Processed locally in your browser

Text Input

Drag & drop a file here, or browse

Any file type — max 50 MB

Uppercase hex

Enter text above or upload a file to generate hashes instantly.

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How to Use

Generate cryptographic hash values for any text or file with this free online tool.

Type or paste text into the input field, or upload a file.
All supported hash values (MD5, SHA-1, SHA-256, SHA-384, SHA-512) are computed and displayed instantly.
Toggle between uppercase and lowercase hex output.
Click Copy next to any hash to copy it to your clipboard.

All hashing is done in your browser using the Web Crypto API — no data is transmitted to any server.

Features

✓MD5, SHA-1, SHA-256, SHA-384, SHA-512
✓Real-time hash computation
✓File upload support
✓One-click copy per hash
✓Uppercase/lowercase toggle
✓No data leaves your browser

Frequently Asked Questions

What is a hash function?: A hash function takes an input of any size and produces a fixed-length string of characters called a hash value or digest. The same input always produces the same hash, but even a tiny change in the input produces a completely different hash. Hash functions are used for data integrity verification, password storage, and digital signatures.
Is MD5 still secure?: MD5 is no longer considered secure for cryptographic purposes such as password hashing or digital signatures because collision attacks have been demonstrated. However, MD5 is still widely used for non-security purposes like checksum verification and data deduplication. For security-sensitive applications, use SHA-256 or SHA-512.
What is the difference between SHA-256 and SHA-512?: SHA-256 produces a 256-bit (64-character hex) hash while SHA-512 produces a 512-bit (128-character hex) hash. SHA-512 provides a larger output and higher security margin but is slightly slower on 32-bit systems. On modern 64-bit processors, SHA-512 can actually be faster than SHA-256.

Hash Generator Online

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Frequently Asked Questions

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