Calculate SHA-256 Hash – Free Online SHA-256 Generator

Compute SHA-256 hash from text in your browser. Client-side only. The standard for secure hashing—certificates, passwords, integrity checks.

What is the SHA-256 Hash tool?

This tool computes the SHA-256 hash of any text. SHA-256 is the standard 256-bit hash for security: certificates, passwords (with salting), blockchain, and integrity checks. All hashing runs in your browser; your data never leaves your device.

Key features

• Client-side — No server uploads.
• UTF-8 input — Any text. Empty input gives the SHA-256 of the empty string.
• Instant — Hash updates as you type.
• Copy — One-click copy.

How to use

1. Open Calculate SHA-256 Hash.
2. Paste or type your text.
3. Copy the SHA-256 hash. Use for API signatures, integrity checks, or storage (with proper salting elsewhere).

When to use SHA-256

• API signatures — Hash payloads or secrets for signing.
• Password storage — With proper salting and key derivation in your app.
• File integrity — Compare with published checksums.
• Blockchain and crypto — Many protocols use SHA-256.

Frequently asked questions

What is SHA-256 used for?

SHA-256 is the standard 256-bit hash for security: certificates, passwords (with salting), blockchain, and integrity checks.

What input does the tool accept?

Any text. Input is hashed as UTF-8.

Is SHA-256 secure?

Yes. SHA-256 is widely used and considered secure for cryptographic hashing.

Is my data sent to a server?

No. Hashing runs in your browser. Your text never leaves your device.

When should I use SHA-256?

For any security-sensitive hashing: API signatures, password storage (with proper salting), file integrity, and more.

Why does my hash not match?

Ensure identical input and UTF-8 encoding. Extra spaces or line endings change the hash.

Try the tool

Use Calculate SHA-256 Hash. See Hash Generator, SHA-512, or All Hashes.

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