SHA-256 Hash Generator
Generate a SHA-256 hash from text, hex or Base64 and compare all SHA-2 variants (224/256/384/512). Hex or Base64 output and a per-line mode, all in your browser.
SHA-256 is part of the SHA-2 family and produces a 256-bit (64-hex-character) fingerprint used everywhere from TLS certificates to file checksums and blockchains. This tool hashes text, hex or Base64, shows every SHA-2 variant for the same input, and outputs hex or Base64. It runs entirely in your browser.
How to use this tool
- Paste your input and say whether it is text, hex or Base64.
- Pick the SHA-2 variant you need.
- Compare all four variants in the table.
- Copy the hash in hex or Base64.
Formula
SHA-256 processes the message in 512-bit blocks through 64 rounds of modular additions and bitwise mixing, producing a 256-bit digest. SHA-224 is the same algorithm with different starting values and a truncated output.
A hash is one-way: identical input always gives the same digest, and no feasible computation reverses it.
Example
SHA-256 of "abc" is ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad, and of the empty string it is e3b0c442…b855 — both from the FIPS 180-4 test vectors.
Frequently asked questions
Is SHA-256 secure?
Yes. Unlike MD5 and SHA-1 it has no known practical collision attack and is recommended for digital signatures, certificates and integrity checks.
Should I hash passwords with SHA-256?
Not directly. Plain SHA-256 is too fast for passwords; use a slow, salted algorithm such as bcrypt, scrypt or Argon2 instead.
What is the difference between SHA-256 and SHA-512?
SHA-512 works on 64-bit words and produces a longer 512-bit digest. On 64-bit machines it is often faster. SHA-384 is SHA-512 with different starting values and a shorter output.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/sha-256-hash-tool/
Cite or embed this tool
kakaoCalc. (2026, November 8). SHA-256 Hash Generator. https://kakao.mobile/tools/sha-256-hash-tool/
“SHA-256 Hash Generator.” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/sha-256-hash-tool/.
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