About the Hash Generator
A hash is a fixed-length string produced from input data by a one-way function. The same input always produces the same hash, but the original data cannot be recovered from it. This free online Hash Generator computes SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text.
Hashing is used for verifying data integrity, generating checksums, building signatures, and comparing files. This tool uses the browser's native Web Crypto API, so hashing is fast and your data never leaves your device.
How to generate a hash
- Type or paste your text into the input box.
- The SHA-1, SHA-256, SHA-384, and SHA-512 hashes are computed instantly.
- Click the copy icon next to any algorithm to copy that hash.
- Use the same text elsewhere to verify the hashes match.
- Click Clear to reset the input.
Features
- Supports SHA-1, SHA-256, SHA-384, and SHA-512.
- Powered by the secure, native Web Crypto API.
- All hashes computed at once as you type.
- One-click copy for each hash value.
- Fully client-side — your input is never uploaded.
Hash Generator (SHA-1 / SHA-256 / SHA-512) FAQs
What is a hash function?
A hash function maps input data of any size to a fixed-length string. It is deterministic and one-way, meaning you cannot reverse the hash back to the original input.
Which hash algorithm should I use?
SHA-256 is a strong, widely-used default. Use SHA-384 or SHA-512 for higher security margins. SHA-1 is included for legacy compatibility but is not recommended for security-critical use.
Do you support MD5?
No. MD5 is not provided by the browser's Web Crypto API and is considered insecure. We recommend SHA-256 or stronger instead.
Is my text sent to a server?
No. Hashing happens entirely in your browser using the Web Crypto API. Your input is never transmitted or stored.
Is this hash generator free?
Yes, it is completely free with no signup and unlimited use.
