Dev ToolboxFast, private developer utilities that run in your browser.
Hash Tools

SHA-1 Hash

SHA-1 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.

Processed locally in your browser. Your input is not uploaded to our server.

How to use this tool

  1. Enter or paste the value you want to work with.
  2. Adjust the available options when needed.
  3. Copy or download the result. Nothing is submitted to our server.

Example

hello

Notes & limitations

MD5 and SHA-1 are included for checksums and legacy compatibility. They are not suitable for modern cryptographic security.