String Hash Generator — Free Online Tool
Hash any text string with all four common algorithms at once: MD5, SHA-1, SHA-256, and SHA-512. Each digest is displayed side-by-side with a security note indicating whether the algorithm is appropriate for cryptographic use. Powered by @noble/hashes.
100% client-side. No uploads. Your data never leaves your browser.
How to use String Hash Generator
- Type or paste the string you want to hash.
- MD5, SHA-1, SHA-256, and SHA-512 digests appear instantly for comparison.
- Note the security indicator next to each algorithm.
- Copy any individual hash with its Copy button.
Frequently Asked Questions
Which algorithms are safe for security use?
SHA-256 and SHA-512 are suitable for data integrity and HMAC. MD5 and SHA-1 are cryptographically broken — use them only for non-security checksums.
Does changing a single character change the entire hash?
Yes. This is the avalanche effect — any change to the input produces a completely different hash output.
Are the hashes case-sensitive?
The hash itself is hexadecimal and displayed lowercase. The input string is case-sensitive: 'Hello' and 'hello' produce different hashes.
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