How do I generate a SHA-256 hash from text online for free?

Type or paste any text into the input above and select SHA-256 (or another algorithm). The hash appears instantly. The tool uses the browser's built-in Web Crypto API — no server, no login.

What hashing algorithms does the hash generator support?

SHA-1 (legacy, avoid for security), SHA-256 (most common for integrity checks and digital signatures), SHA-384, and SHA-512 are all supported. All four are implemented via the browser's native Web Crypto API for maximum performance and correctness.

What is the difference between SHA-1, SHA-256, and SHA-512?

SHA-1 produces a 160-bit (40 hex character) hash and is considered cryptographically weak — avoid it for security purposes. SHA-256 produces a 256-bit (64 hex character) hash and is the current standard for most security and integrity use cases. SHA-512 produces a 512-bit (128 hex character) hash, offering more collision resistance at the cost of a slightly larger output.

Can I hash a file instead of a text string?

The current tool hashes text input. To hash a file, open the browser's developer console (F12) and use the Web Crypto API: crypto.subtle.digest('SHA-256', await file.arrayBuffer()). Askerium's full workspace also supports file-level integrity checking.

Is the hash generator free and private?

Yes — free, no account, and fully private. Your input is hashed locally using the Web Crypto API; nothing is ever sent to a server.

SHA hash

Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text. Uses Web Crypto API.

Your files are processed locally and never uploaded to our servers.

Input text

SHA-1, SHA-256, SHA-384, and SHA-512 — all computed in your browser using the Web Crypto API.

How it works

1
Type or paste input
Paste your value into the input field. No file needed — works directly in your browser.
2
Get instant results
The result appears in real time as you type. No server, no upload.
3
Copy the output
Click the copy button to copy the result to your clipboard instantly.

Frequently Asked Questions

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