Hash Generator

What is it and how does it work

How to generate a hash

1. Type or paste text into the box above.
2. SHA-1, SHA-256, SHA-384 and SHA-512 hashes are all computed instantly.
3. Click "Copy" next to any hash to copy it to your clipboard.

Use cases

What hashes are used for

A cryptographic hash function takes input of any size and produces a fixed-length string that acts like a fingerprint — the same input always produces the same hash, but even a tiny change in the input produces a completely different one. This makes hashes useful for verifying that a downloaded file matches the original (checksum verification), detecting whether a document has been altered, and storing password fingerprints instead of the passwords themselves.

This tool uses your browser's native Web Crypto API to compute hashes, which is the same trusted cryptography engine browsers use for HTTPS and other security features — nothing is implemented from scratch or sent anywhere to be processed.

As a text to hash converter, it also works well as a general checksum generator: paste in file contents or a string and compare the output against a published hash to confirm nothing was altered in transit.

Most frequently asked questions

FAQ

Is this hash generator really free, with no sign-up?+

Yes. The tool runs entirely using your browser's built-in Web Crypto API — there's no account, no API key, and no limit on how often you can use it.

Does my text get uploaded anywhere?+

No. Hashes are computed locally using your browser's native cryptography engine. Nothing is sent to a server, stored, or logged.

What is a hash used for?+

A cryptographic hash converts input of any length into a fixed-length string that uniquely represents that input. It's commonly used to verify file integrity, check that a download hasn't been corrupted or tampered with, and to store password fingerprints instead of raw passwords.

Which hash algorithms are supported?+

SHA-1, SHA-256, SHA-384 and SHA-512 are all generated at once, computed using the SubtleCrypto interface built into modern browsers.

Is SHA-1 still safe to use?+

SHA-1 is no longer considered cryptographically secure against determined attackers and shouldn't be used for security-sensitive purposes. SHA-256 or higher is recommended when security matters; SHA-1 is included here mainly for compatibility and legacy checksum verification.

Related tools

Tools for Developers

• Base64 Encoder/Decoder — encode or decode text and data as Base64.
• CSV to JSON Converter — convert CSV data into a formatted JSON array of objects.
• Password Strength Checker — check password strength with a live meter and criteria checklist.

Methodology

How This Generator Works

Your hashes are computed live using your browser's built-in Web Crypto API — nothing you type is uploaded to a server, stored, or logged anywhere.

Last updated: August 28, 2026.