What is the SHA-256 hash of "foo"?

Q: What is the SHA-256 hash of "foo"?

The SHA-256 hash of "foo" is "2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae".

SHA-256 Hash of "foo"

SHA-256

2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae

The SHA-256 hash of "foo" is: 2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae

All hash values

SHA-256Recommended2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae

SHA-10beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33

SHA-38498c11ffdfdd540676b1a137cb1a22b2a70350c9a44171d6b1180c6be5cbb2ee3f79d532c8a1dd9ef2e8e08e752a3babb

SHA-512f7fbba6e0636f890e56fbbf3283e524c6fa3204ae298382d624741d0dc6638326e282c41be5e4254d8820772c5518a2c5a8c0c7f7eda19594a7eb539453e1ed7

⚠️ Do not use SHA-1 for security

SHA-1 is considered cryptographically broken. Use SHA-256 or higher for all security-sensitive applications.

How SHA-256 works

SHA-256 is a cryptographic hash function that produces a fixed 256-bit (64-character hex) output. Even a tiny change in the input produces a completely different hash. It is one-way — you cannot reverse a hash to get the original input.

Common uses for hash functions

Password hashing and storage
File integrity verification
Digital signatures and certificates
Blockchain and cryptocurrency
Data deduplication

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