Hash Generator (MD5, SHA-256)
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text instantly in your browser. Free, no sign-up, nothing uploaded.
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About this tool
Hash Generator (MD5, SHA-256) — The Hash Generator turns any text into MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hash values at once. As you type, every hash updates live and each has its own copy button, with an option to switch the output to uppercase.
Hashes are one-way fingerprints of data: the same input always produces the same fixed-length output, and you cannot reverse a hash back into the original text. They are widely used for verifying file integrity (checksums), comparing values, and storing non-reversible references. The SHA family is computed with your browser's built-in Web Crypto API, and MD5 is computed locally too — nothing you enter is uploaded.
How to use it
- Type or paste your text in the box above.
- Read the MD5 and SHA hashes as they update instantly.
- Tap copy next to any hash, or toggle uppercase if you need it.
Frequently Asked Questions
Which hash should I use?+
For integrity checks and modern use, prefer SHA-256 or SHA-512. MD5 and SHA-1 are useful for compatibility or comparing against older checksums, but they are not considered secure against deliberate collisions.
Can a hash be reversed back to the text?+
No. Hashing is one-way by design. The tool only computes hashes; it cannot turn a hash back into the original input.
Is my text sent anywhere?+
No. All hashing runs locally in your browser using the Web Crypto API and a local MD5 implementation. Nothing is uploaded or stored.
Why is MD5 not available in the browser by default?+
The Web Crypto API intentionally omits MD5 because it is cryptographically broken. We include it here as a self-contained implementation for checksum and compatibility purposes only.