Which hash algorithm should I use?

Use SHA-256 for security-critical applications. MD5 and SHA-1 are considered cryptographically broken for security purposes but are still useful for checksums and non-security hash comparisons.

Is my data sent anywhere?

No. All hashing is performed locally in your browser using the Web Crypto API. Your input data never leaves your machine.

Yes. You can drag and drop a file to compute its hash without reading the file contents into text first. This is useful for verifying download integrity.

Generate Hash Online Free

Compute MD5, SHA-1, SHA-256 and other cryptographic hashes from any text input. This free tool runs entirely in your browser using the Web Crypto API, so your data is never sent to a server.

Open Hash Generator

Example Hash Output

Input: Hello World

MD5:    b10a8db164e0754105b7a99be72e3fe5
SHA-1:  0a4d55a8d778e5022fab701977c5d840bbc486d0
SHA-256: a591a6d40bf420404a011733cfb7b190d62c65bf0bcda32b57b277d9ad9f146e

Common Use Cases

Verifying file integrity after downloads
Generating checksums for configuration values
Creating deterministic identifiers from input data
Comparing hashes to detect data tampering

Frequently Asked Questions

Which hash algorithm should I use?: Use SHA-256 for security-critical applications. MD5 and SHA-1 are considered cryptographically broken for security purposes but are still useful for checksums and non-security hash comparisons.
Is my data sent anywhere?: No. All hashing is performed locally in your browser using the Web Crypto API. Your input data never leaves your machine.
Can I hash files?: Yes. You can drag and drop a file to compute its hash without reading the file contents into text first. This is useful for verifying download integrity.