XOR Cipher (Text to Hex)
Security ToolsXOR text with a repeating key and see the hex
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All history →XOR Cipher (Text to Hex) — at a glance
XOR your text with a key and see the bytes in hex.
How to use it — step by step
Your text (or hex bytes to decode) and a key.
Add your text
Paste or type your input into the box. The Sample button fills in an example.
Choose the options
Pick the mode and settings you need. Results update when you run the tool again.
Press Run XOR
The result is made instantly inside your browser.
Copy the result
Use the Copy button, or send it to another tool.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What does XOR do?+
It flips the bits of each byte wherever the key has a 1 bit. Doing it twice with the same key gives the original back.
What format is the output?+
Lowercase hex bytes separated by spaces. Decode accepts hex with or without spaces.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.