Felo

Old Russian Translator Online – Cyrillic Letter Substitution

Convert Latin letters into Cyrillic-looking 'Old Russian' style characters with a fixed, published letter map, and convert them back again. Every mapping pair is stated openly, uppercase is handled, and unmapped characters such as digits and punctuation are preserved rather than dropped. Try it online.

What is Old Russian Translator Online – Cyrillic Letter Substitution?

This is a text tool that swaps Latin letters for Cyrillic and archaic-looking Cyrillic characters using a fixed one-to-one table. It is the same kind of job as the classic free text pages that let you type English and watch the letters turn into something that looks like old Slavic script. It is a visual cipher, not a translation: the words stay English, only the letters change shape.

Key Features

A complete, published letter map. Every pair is listed, so you can see exactly what a, b, d, e, f, g, h, i, k, l, m, n, o, p, r, s, t, u, v, ý and ÿ become.
Reverse conversion. Paste Cyrillic-style text and ask for the reverse; the tool applies the exact inverse of the same table.
Case handling. Uppercase Latin letters map to the uppercase form of the same Cyrillic character, so 'MIR' becomes 'МИР' rather than a mix.
Preservation. Spaces, punctuation, digits, emoji and any letter outside the table are kept exactly as typed.
Random sentence option. Ask for a random sample sentence and get one generated from the same mapping.

How to Use

Type or paste your Latin text and say what you want, for example: Convert to Old Russian: privet mir.
Read the copyable code block that comes back. The converted text is placed there so you can copy it without stray formatting.
For the other direction, paste the Cyrillic-style text and add reverse. Ask for a random sentence any time with random sentence.

Example Use Cases

Styling a username or display name. Convert a short handle into Cyrillic-looking characters for a game profile or forum signature.
Making a decorative caption. Turn a short English phrase into old-looking script for a poster mock-up or a fantasy story prop.
Decoding text a friend sent. Paste the Cyrillic-looking string and reverse it to read the original Latin letters.

Tips for Best Results

Remember that only the listed letters change. Letters like c, j, q, w, x, y and z are not in the table and will stay as they are, which is expected.
Keep the text in one block if you want the line breaks preserved exactly.
If you need real Russian words rather than a letter cipher, this tool is not the right one — it does not translate meaning.

FAQ

What input does it accept?
Plain text of any length you can paste. There is no file upload; the tool works on text only.

Is the output accurate?
It is accurate as a substitution: every mapped letter is replaced exactly as the table says, and everything else is preserved. It is not accurate as Russian or Old Russian, because it does not translate words.

How is this different from some free text tools?
Some free text pages apply a letter swap but do not state the full table, do not define uppercase behaviour, and do not explain that the result is a cipher rather than a translation. This tool publishes the map, defines case handling, preserves unmapped characters and supports the reverse direction explicitly.