Calculate SHA3 Hash – SHA3-224, 256, 384, 512 | Free Online Tool

Compute SHA-3 family hashes (SHA3-224, SHA3-256, SHA3-384, SHA3-512) from text in your browser. Client-side only. Keccak-based standard.

What is the SHA3 Hash tool?

This tool computes SHA-3 hashes (SHA3-224, SHA3-256, SHA3-384, SHA3-512) from text. SHA-3 is a modern standard based on Keccak, different from SHA-2. All hashing runs in your browser.

Key features

• All SHA-3 variants — SHA3-224, 256, 384, 512 in one view.
• Client-side — No server uploads.
• UTF-8 input — Any text. One input, four hashes.
• Copy — One-click copy per hash.

How to use

1. Open Calculate SHA3 Hash.
2. Paste or type your text.
3. Copy the hash(es) you need. SHA3-256 is a common default.

When to use SHA-3

Use when a system requires SHA-3 or you prefer a Keccak-based hash. SHA-2 is still more common; both are secure.

Frequently asked questions

What is SHA-3?

SHA-3 is a hash standard (Keccak-based) with variants SHA3-224, SHA3-256, SHA3-384, SHA3-512. It is different from SHA-2.

What input does the tool accept?

Any text. Input is hashed as UTF-8. You can get all four SHA-3 variants.

Is SHA-3 secure?

Yes. SHA-3 is a modern standard and is considered secure.

Is my data sent to a server?

No. Hashing runs in your browser.

When should I use SHA-3?

When a system requires SHA-3 or you prefer a Keccak-based hash. SHA-2 is still more common.

Why does my hash differ from SHA-256?

SHA-3 is a different algorithm from SHA-2. Same input will give different SHA-256 and SHA-3 hashes.

Try the tool

Use Calculate SHA3 Hash. See Hash Generator, SHA-256, or All Hashes.

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