Felo

Backwards Alphabet Translator Online

Encode or decode text with a backwards alphabet cipher, where a becomes z, b becomes y, and so on. Unlike a fixed two-box widget, you can name the direction, see the full character map, and get copyable output with every unmapped character preserved. Try it online.

What is Backwards Alphabet Translator Online?

Backwards Alphabet Translator Online is a conversational tool for the reverse-alphabet cipher, often called the backwards alphabet code. You give it text and tell it whether to encode or decode. It swaps each mapped letter with its mirror counterpart — a with z, b with y, c with x — and applies a matching set of punctuation swaps. Everything it does not map, such as spaces, digits, periods and commas, comes back exactly as you typed it.

The point is not secrecy. This is a playful cipher for puzzles, classroom activities, escape-room clues and messages to friends. What this agent adds is clarity: it states the exact map it uses, accepts an explicit direction, and returns the result in a copyable block so you can paste it wherever you need.

Key Features

Exact reverse-alphabet mapping. Lowercase a–z and uppercase A–Z are each mirrored, so 'hello' becomes 'svool' and 'Hello' becomes 'Svool'.
Encode and decode in one place. Say 'encode' or 'decode', or simply paste coded text and ask for the original. The same map runs in reverse.
Punctuation swaps included. The question mark and exclamation mark, single and double quotes, colon and semicolon, and forward and back slash are swapped as pairs.
Nothing silently dropped. Spaces, digits, periods, commas, emoji and any other unmapped character are preserved verbatim, and the agent tells you which characters were left alone.
Round-trip check. Ask for verification and the agent decodes its own output to confirm it matches your original text.

How to Use

Type or paste your text and state the direction, for example: "Encode: meet me at the library at noon." If you paste text that already looks like a backwards alphabet code and ask to decode it, the agent will run the reverse mapping.
Read the copyable result block. The agent also lists any characters it did not map, so you know exactly what passed through unchanged.
Ask for a round-trip check or a second pass if you want confirmation. You can also request the full character map at any time.

Example Use Cases

Classroom cipher activity. A teacher writes a short sentence for a backwards alphabet translator exercise and asks for the encoded version to hand out as a puzzle.
Decoding a backwards alphabet code from a friend. Someone sends a line of scrambled letters; paste it and ask the agent to decode the backwards alphabet message back into plain English.
Escape-room or party clue. You need a short clue encoded consistently, including its question mark, and you want to be sure the punctuation swapped correctly before printing it.

Tips for Best Results

Always say 'encode' or 'decode' when the direction could be ambiguous; a short coded string can look like ordinary text.
Keep the original text handy. Because the cipher is its own inverse, decoding the output should return your input exactly, and you can check that yourself.
Remember that periods and commas are not part of the map. If you need them swapped, ask explicitly and the agent will tell you they are outside the standard set.

FAQ

What input format does it accept?
Plain text of any length you can paste into the chat. There is no file upload. Very long passages are handled in order, but extremely long text may be split across parts of the reply.

How accurate is the result?
The mapping is deterministic: each mapped character has exactly one counterpart, and unmapped characters are preserved. Accuracy depends only on the direction being correct, which is why stating 'encode' or 'decode' helps.

How is this different from some free text tools?
Many free text tools give you two boxes and leave the direction and the exact map implicit. This agent states the map, accepts an explicit direction, preserves unmapped characters visibly, and can verify a round trip. It does not add encryption, accounts or saved history.

Does it handle capital letters?
Yes. Uppercase letters map to uppercase counterparts, so 'A' becomes 'Z' and 'Z' becomes 'A', independently of lowercase.

Can I get the full character map?
Yes, just ask. The agent will list every letter pair and every punctuation pair it uses.