UtilitySansar
Encoding

Caesar Cipher / ROT13

Encode or decode text with the classic Caesar shift cipher. Adjust the shift from 0 to 25 with a slider, jump to ROT13, or brute-force all 26 shifts to reveal a hidden message.

Ringkasan alat

Alat ini menerima input terstruktur dan menghasilkan output deterministik di browser, tanpa upload server.

Nama alat
Caesar Cipher / ROT13
Maksud input
Berikan konten sumber untuk diubah, divalidasi, atau dianalisis.
Maksud output
Terima output ternormalisasi yang siap disalin, dipakai ulang, atau di-debug.
Contoh input
Attack at dawn!
Contoh output
Nggnpx ng qnja!
Non-letters (digits, punctuation) are left untouched.
Show all 26 shifts (brute-force preview)
+0Attack at dawn!
+1Buubdl bu ebxo!
+2Cvvcem cv fcyp!
+3Dwwdfn dw gdzq!
+4Exxego ex hear!
+5Fyyfhp fy ifbs!
+6Gzzgiq gz jgct!
+7Haahjr ha khdu!
+8Ibbiks ib liev!
+9Jccjlt jc mjfw!
+10Kddkmu kd nkgx!
+11Leelnv le olhy!
+12Mffmow mf pmiz!
+13Nggnpx ng qnja!
+14Ohhoqy oh rokb!
+15Piiprz pi splc!
+16Qjjqsa qj tqmd!
+17Rkkrtb rk urne!
+18Sllsuc sl vsof!
+19Tmmtvd tm wtpg!
+20Unnuwe un xuqh!
+21Voovxf vo yvri!
+22Wppwyg wp zwsj!
+23Xqqxzh xq axtk!
+24Yrryai yr byul!
+25Zsszbj zs czvm!

Pengantar alat

Encode or decode text with the classic Caesar shift cipher. Adjust the shift from 0 to 25 with a slider, jump to ROT13, or brute-force all 26 shifts to reveal a hidden message.

Gambaran alat

The Caesar cipher shifts each letter by a fixed number of positions in the alphabet. ROT13 is the special case where the shift is 13, which makes it self-inverse (encoding twice returns the original text). Digits, punctuation, and whitespace are left unchanged. This is a classical cipher intended for puzzles and learning — it provides no real cryptographic security.

Kasus penggunaan

  • Use Caesar Cipher / ROT13 when you need fast encode and decode text with a classic caesar shift cipher. includes a slider, a rot13 preset, and a brute-force preview of all 26 shifts.
  • Handle encoding workflows directly in the browser with no install required.
  • Support SEO long-tail intent by covering quick checks, troubleshooting, and one-off conversions.

Contoh input/output

ROT13 (shift 13).
Maksud input
Attack at dawn!
Maksud output
Nggnpx ng qnja!
Shift 3, decoded.
Maksud input
Khoor Zruog
Maksud output
Hello World

Pertanyaan umum

Is the Caesar cipher secure?+
No. It's trivially broken by trying all 26 shifts, which is exactly what the brute-force panel does. Treat it as a learning or puzzle tool, not real cryptography.
How do I decode an encoded message?+
Either use the Invert button to flip your current shift, or slide through the values until the output looks like readable text.
Does it handle non-English alphabets?+
The shift only applies to the 26 letters of the basic English alphabet. Other characters pass through unchanged.

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