SHA-256 Hash Generator Online

Fast, client-side SHA-256 hashing for text and files.

Mode:

Characters: 0

Hash will appear here…
HEX
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Base64
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About SHA-256

What is SHA-256?

SHA-256 (Secure Hash Algorithm 256-bit) produces a 32-byte digest typically represented as a 64-character hexadecimal string.

Outputs

  • 256-bit digest (32 bytes)
  • HEX (64 chars) or Base64
  • Deterministic & one-way

Best Practices

Use SHA-256 for checksums and integrity. For authentication use HMAC-SHA256.

Common Uses

  • File integrity verification
  • API signing (HMAC-SHA256)
  • Data fingerprinting

Tool Features

Core

  • • Text & file hashing
  • • Live hashing
  • • HEX/Base64 outputs

HMAC Mode

  • • UTF-8/HEX key input
  • • Random key generator
  • • File HMAC support

UX

  • • Copy & Download
  • • Paste from clipboard
  • • Timing-safe verify