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Text Hash Calculator (SHA-256 / SHA-1)

Instantly compute SHA-256 and SHA-1 hashes of text or passwords in your browser. Nothing is sent to a server.

✅ 100% free, no signup, runs entirely in your browser

SHA-256
(enter text above)
SHA-1
(enter text above)
If something is broken or not displaying correctly, let us know via the contact form — we use the feedback to improve.

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📖 How to Use

  1. 1
    Type the text to hash
    Type or paste the text you want to hash into the input field. SHA-256 and SHA-1 values are calculated in real time as you type.
  2. 2
    Review the hash values
    SHA-256 (256-bit / 64 hex chars) and SHA-1 (160-bit / 40 hex chars) are shown. Choose the algorithm appropriate for your use case.
  3. 3
    Copy and use
    Click the Copy button next to each hash to copy it. Use it for file integrity checks, API signature verification, or comparing against known values.

❓ FAQ

Should I use SHA-256 or SHA-1?
Use SHA-256 for any security-sensitive purpose. SHA-1 has known collision vulnerabilities and is not recommended for new systems.
Are hash values one-way?
Yes. Hash functions are one-way: recovering the original text from a hash is computationally infeasible. Short or common texts can sometimes be looked up via rainbow tables.
Is my input sent to a server?
No. Hashing is performed entirely in your browser using Web Crypto API. Your text and passwords are never sent anywhere.