ハッシュ計算機

ブラウザ内で MD5 / SHA-1 / SHA-256 / SHA-512

アルゴリズム MD5 SHA-1 SHA-256 SHA-512

HMAC モード

期待値（任意）

🔒 このツールは完全にブラウザー内で動作します。入力データはサーバーに送信されません。

ハッシュ計算機（MD5 / SHA-1 / SHA-256 / SHA-512）

Compute the four most common cryptographic hash digests for any UTF-8 text input. SHA-1, SHA-256 and SHA-512 use the browser's native SubtleCrypto; MD5 uses a small built-in implementation. Useful for checksums, ETags, integrity checks and quick fingerprinting.

MD5, SHA-1, SHA-256 and SHA-512
UTF-8 safe
Browser-native SubtleCrypto for SHA
Hex output, lowercase
Side-by-side comparison
Privacy: input never sent to a server

FAQ

Is MD5 still safe?

MD5 is broken for cryptographic security but still widely used as a fast non-cryptographic checksum. For passwords prefer Argon2 or salted SHA-256.

Why are outputs 32 / 40 / 64 / 128 hex characters?

MD5 = 128 bits (32 hex), SHA-1 = 160 (40), SHA-256 = 256 (64), SHA-512 = 512 (128).

Will my input be uploaded?

No. Hashes are computed locally.