Home›Generators & Security›SHA-256 Hash Generator

SHA-256 Hash Generator (SHA-1, SHA-384, SHA-512)

Compute the cryptographic hash of any text instantly — SHA-256, SHA-512, SHA-384 and SHA-1. 100% client-side.

100% free No sign-up Private · runs in your browser

How to use the free online sha-256 hash generator

Type or paste any text into the input.
Choose the algorithm (SHA-256 by default).
Optionally check 'Uppercase'.
Copy the resulting hex digest.

About this tool

Compute SHA-256, SHA-512, SHA-384 or SHA-1 hashes of any text or password with a live preview as you type. Hashing runs entirely in your browser via the native Web Crypto API, so sensitive input never leaves your device. Use it to verify file downloads, check data integrity, or understand how hashing works. Output as lowercase or uppercase hex, copied with a single click.

Key features

SHA-1, SHA-256, SHA-384, SHA-512
Live as-you-type hashing
Uppercase output option
100% client-side

Privacy first: every calculation and generation runs 100% locally in your web browser using the Web Crypto API. Your input never touches a server — nothing is stored, logged or sold.

Read the guide

Security · 5 min read

How to create a strong password (2026 guide)

Why length beats complexity, how password managers work, and why you should never reuse a password.

Security · 5 min read

How password strength is really measured

Entropy, crack time and why 'Password1!' is weaker than you think.

Frequently asked questions

SHA-256 (Secure Hash Algorithm 2, 256-bit) is a one-way cryptographic hash function that converts any input into a fixed 64-character hex string. It is the standard hashing algorithm behind TLS certificates and Bitcoin.

No practical reversal is possible — hashing is one-way. The only way to 'find' the input is by brute force, which is why strong passwords matter even against leaked hashes.

SHA-1 is cryptographically broken for collision resistance and should not be used for security purposes. We include it for legacy compatibility only — prefer SHA-256 or SHA-512.

No. Everything runs inside your browser using the native Web Crypto API. Your input never leaves your machine.