Atbash cipher

This calculator allows you to encrypt and decrypt text with Atbash method

The rule of Atbash cipher is that you have to change n letter of the alphabet with m − n + 1 letter, where m - the number of letters in an alphabet.
Here's an example
abcdefghijklmnopqrstuvwxyz (original text)
zyxwvutsrqponmlkjihgfedcba (ciphertext)

PLANETCALC, Atbash cipher

Atbash cipher

Transformed text
Svool dliow!

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PLANETCALC, Atbash cipher

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