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Encoders, converters & dev utilities
SHA-512 Hash Generator
Generate the SHA-512 hash of any text or file. SHA-512 (from the SHA-2 family, FIPS 180-4) is a 512-bit digest, printed as 128 lowercase hex characters, computed in your browser with the Web Crypto API. It offers the largest digest of the common SHA-2 sizes and is often faster than SHA-256 on 64-bit hardware, making it a strong choice for integrity checks, large-file checksums, and signature schemes. Worked example: SHA-512("abc") begins ddaf35a193617aba and is 128 hex characters long. Like the rest of the SHA-2 family it has no known practical collision. All hashing is client-side, so your input never leaves the page. Free, no login.
SHA-512 (SHA-2, FIPS 180-4) = a 512-bit digest → 128 lowercase hex characters; largest common SHA-2 size
- Byte-exact test vector: SHA-512("abc") begins ddaf35a193617aba… (128 hex chars total)
- In the browser: crypto.subtle.digest("SHA-512", bytes) — native Web Crypto; often faster on 64-bit CPUs
- No known practical collision — suitable for checksums, signatures, and large-file integrity
- One-way, not encryption; for passwords use bcrypt/scrypt/argon2; runs 100% client-side, nothing uploaded
Frequently asked questions
How do I generate a SHA-512 hash?
Paste text or select a file and the tool returns its SHA-512 digest — a 512-bit value shown as 128 hex characters — using the browser Web Crypto API. For example SHA-512("abc") starts ddaf35a193617aba. The computation is entirely client-side, so your input is never sent to a server.
Is SHA-512 more secure than SHA-256?
SHA-512 has a larger 512-bit digest versus SHA-256's 256 bits, giving a bigger security margin against brute-force and (theoretical) collision attacks, and it is frequently faster on 64-bit processors. In practice both are part of SHA-2 and both are considered secure with no practical collision, so SHA-256 is a perfectly good default; choose SHA-512 when you specifically want the larger digest or better 64-bit performance.
When should I use SHA-512 instead of SHA-256?
Use SHA-512 when you want the extra digest length (for long-term integrity or higher security margins), when your platform is 64-bit and benefits from its speed, or when a protocol or standard specifies it. For everyday checksums and signatures SHA-256 is smaller and just as safe. Both are one-way hashes, so neither should be used to store passwords — use bcrypt, scrypt, or argon2 for that.