QuickToolz ROT13 / Caesar Cipher is a free online tool. No sign-up needed.
How to Use ROT13 / Caesar Cipher
Step 1
Enter your text
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Step 2
Choose the cipher type
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Step 3
Copy the output
What is ROT13 / Caesar Cipher?
The QuickToolz ROT13 and Caesar Cipher tool encodes and decodes text using classical substitution ciphers. Supports ROT13, custom Caesar shift values, and the Atbash reverse cipher.
Frequently Asked Questions
Is ROT13 the same as Caesar with shift 13?
Yes, ROT13 is a Caesar cipher with a fixed shift of 13, which is self-inverse.
Can I use a custom shift value?
Yes, the Caesar cipher mode accepts any shift from 1 to 25.
What is the Atbash cipher?
Atbash replaces each letter with its mirror: A becomes Z, B becomes Y, and so on.
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