Free · in your browser
Hash Generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text instantly, with clean lowercase hex output. Free, fast and private: your data never leaves your device.
Private by design — your text is hashed locally with WebCrypto and never uploaded.
How to generate a hash online
- Type or paste your text into the box above.
- Pick an algorithm — SHA-256, SHA-512, SHA-384 or SHA-1 — from the dropdown.
- The lowercase hex digest updates live; click Copy to grab it or Clear to start over.
Why use a hash generator?
Hashing turns any text into a fixed-length fingerprint, so it is perfect for verifying file integrity, building checksums, comparing values, or storing non-reversible tokens. A SHA-256 or SHA-512 hash will change completely if even one character differs, which makes it ideal for detecting tampering or accidental corruption. Because everything runs in your browser with the native WebCrypto engine, even sensitive strings such as API payloads or config secrets stay on your machine and are never sent over the network.
Frequently asked questions
Is this hash generator free and private?
Yes — it is 100% free with no sign-up, and completely private. Your text is hashed in your browser with the native WebCrypto API (crypto.subtle.digest); nothing is ever uploaded to a server.
Which hash algorithms are supported?
SHA-1, SHA-256, SHA-384 and SHA-512. These are the secure-hash algorithms exposed by the browser WebCrypto engine. SHA-256 and SHA-512 are recommended for new work; SHA-1 is offered only for legacy checksums.
Why isn't MD5 available?
MD5 is not part of the browser WebCrypto standard, so it cannot run locally without loading an external library. MD5 is also cryptographically broken, so SHA-256 or SHA-512 is the better choice for integrity and checksums.
What format is the hash output?
Lowercase hexadecimal — the standard representation used by command-line tools like sha256sum, Git, and most checksum verifiers, so you can compare values directly.