🔐
🧩

Create Caesar Cipher Puzzles

Encode hidden messages in Caesar cipher for scavenger hunts, escape rooms, and puzzle challenges.

Níl gá le logáil isteach

Shifts each letter by 13. Self-inverse — applying it twice returns the original.

Input
Output
Gur dhvpx oebja sbk whzcf bire gur ynml qbt.

Puzzles tips

🧩

Choose a shift of 3 (the original Caesar shift) for classic puzzle design. Players who know history will try 3 first.

💡

For harder puzzles, use a shift that doesn't have an obvious mnemonic. Shift 7 or 17 are harder to guess than 1, 3, or 13.

🔍

Frequency analysis: in English, E is the most common letter. If you see lots of H in the ciphertext, the shift might be 3 (E+3=H).

🎯

For escape rooms, hide the shift number in a visual clue. A clock showing 7 o'clock is the key to a shift-7 cipher.

Conas a Oibríonn sé

1
Cuir isteach
Enter your data into the tool above. Everything stays local to your browser.
2
Próiseas
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Íosluchtaigh
Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Cén fáth ár gceann a úsáid?

Go hiomlán saor in aisce - gan aon chostais i bhfolach, riamh
Níl cuntas, ríomhphost ná logáil isteach ag teastáil
Ní fhágann comhaid do ghléas riamh
Níl aon teorainn le méid comhaid ar bith
Gan comhartha uisce ar aon aschur

Also check out…

Ceisteanna Coitianta