Free Online SHA-512 Hash Generator

A SHA-512 hash generator produces a 512-bit digest (128 hex characters) per FIPS 180-4 — twice the width of SHA-256 with a larger collision-resistance margin.

Your data is processed entirely in your browser and never sent to any server.

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How to Use This Tool

  1. Type or paste text into the input box.
  2. The 128-character SHA-512 digest appears in the output box automatically.
  3. Click Copy hash to send the digest to your clipboard.
  4. Click Clear to reset the input.

What Is a SHA-512 Hash Generator?

SHA-512 is the 512-bit member of the SHA-2 family (FIPS 180-4). It produces a 64-byte digest, expressed as 128 hex characters. Internally it operates on 64-bit words instead of SHA-256's 32-bit words, which means on modern 64-bit CPUs SHA-512 can actually run faster than SHA-256 on longer inputs.

Reach for SHA-512 when you want the largest practical safety margin against collision attacks, when you're hashing long inputs on 64-bit hardware, or when a spec explicitly calls for it. The standardised contexts include some HMAC and HKDF profiles, parts of Linux's crypto stack, certain ZFS checksums, and several post-quantum signature schemes. For TLS, package signing and general integrity checks, SHA-256 is the conventional default.

Like SHA-256, SHA-512 is too fast for raw password hashing — pair it with PBKDF2-HMAC-SHA512 or use Argon2 if you need to hash credentials. This page computes SHA-512 locally with the Web Crypto API; your input stays in the browser.

Frequently Asked Questions

SHA-512 vs SHA-256?
SHA-512 produces a longer digest and is slightly more collision-resistant. On 64-bit CPUs it can be faster than SHA-256.
How long is the output?
128 hex characters (512 bits). You can truncate to 256 bits if needed for compatibility.
When should I use SHA-512?
When you need maximum collision resistance, or you're on a 64-bit system where it's faster than SHA-256.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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