Hash Generator
Hash text with MD5, SHA-1 and SHA-256.
Enter text above to generate the MD5 hash.
Enter text above to generate the SHA-1 hash.
Enter text above to generate the SHA-256 hash.
Enter text above to generate the SHA-512 hash.
About the Hash Generator
Generate cryptographic hashes — MD5, SHA-1, SHA-256 and SHA-512 — from any text, instantly and locally. Useful for checksums, fingerprinting and verifying data integrity. Your input is hashed in the browser and never uploaded.
How to use it
- 1Type or paste the text you want to hash.
- 2Read the MD5, SHA-1, SHA-256 and SHA-512 digests update in real time.
- 3Copy the hash you need with one click.
What hashes are good for
A hash turns any input into a fixed-length fingerprint. The same input always produces the same digest, but even a one-character change produces a completely different result, and you can't work backwards from the digest to the original. That makes hashes ideal for verifying that a downloaded file hasn't been tampered with, comparing two pieces of data without storing them, or indexing content. Because the function is one-way, hashing is not encryption — you can't 'decrypt' a hash — and MD5 and SHA-1 in particular should be treated as checksum tools only, not security ones.
Common uses
- Verifying a downloaded file against a published checksum.
- Generating a fingerprint to detect whether two texts are identical.
- Creating a stable cache key or identifier from arbitrary content.
Frequently asked questions
- Can a hash be reversed back to the original text?
- No. Hashes are one-way functions — you can't recover the input from the digest. (MD5 and SHA-1 are fine for checksums but should not be used for security.)
- Is my text sent to a server?
- No. Hashing happens entirely in your browser.
- Which hash should I use?
- Use SHA-256 or SHA-512 when integrity matters. MD5 and SHA-1 are faster and fine for non-security checksums, but they're considered broken for anything involving security and shouldn't be used to protect data.