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Facebook Key Hash Generator (from SHA-1)

Convert your app’s SHA-1 fingerprint into the Facebook Android key hash — and back — without OpenSSL.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Facebook Login asks for a “key hash”: it is your signing certificate’s SHA-1 written in Base64. Get the SHA-1 from Play Console → App integrity, from keytool, or from our APK Info Viewer.

How to use it (step by step)

  1. 1Type or paste your text into the “SHA-1 fingerprint (or key hash)” box. There is already an example in it so you can see how it works; press Clear to start with your own.
  2. 2The answer appears right away in the “Result” box. No button needed.
  3. 3Press Copy and paste the result wherever you need it.

Words to know

Hash / fingerprint (SHA-256)
A short code calculated from a file or text. Change even one letter and the code becomes completely different, so it proves nothing was altered.
SHA-1 / SHA-256 fingerprint
A short code that identifies the key used to sign your app. Firebase, Google Sign-In and Maps ask for it to make sure requests come from your real app.
Key hash (Facebook)
Facebook’s name for your app’s SHA-1 fingerprint written in Base64.
Base64
A way to turn any file or text into plain letters and numbers so it can be sent safely inside text.
APK / IPA
The install files of an app: .apk for Android, .ipa for iPhone. Both are really zip files with the app inside.
App signing / keystore
Every app is signed with a private key (kept in a keystore file). Updates must be signed with the same key, so never lose it.

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