Encoder / SHA generator
Hash text with SHA-1/256/384/512 or encode and decode Base64, URL and HTML entities. Everything runs in your browser, and nothing is sent to our servers.
Hash
Encode / decode
What is a SHA hash?
A one-way fingerprint of your input. The same text always gives the same hash, but the hash can't be turned back into text.
When to use Base64
To safely embed binary or special characters in text formats like JSON, email or data URIs. It is encoding, not encryption.
Privacy
All processing uses your browser's built-in Web Crypto API. Your input never leaves your device.