Felo

Medieval Spanish Translator Online

Convert modern Spanish into medieval-style Spanish, roughly the language of the Cantar de Mio Cid era, using a fixed set of phrase, word, letter, and suffix rules. Every change is shown and unmapped words are preserved, so you can see exactly what the converter did. Try it online.

What is Medieval Spanish Translator Online?

Medieval Spanish Translator Online is a text converter that rewrites present-day Spanish into an approximate medieval style, close to the language of the Cantar de Mio Cid period. It works from a fixed, inspectable rule set: phrase pairs, whole-word pairs, a few intraword letter changes, and one suffix rule. You paste modern Spanish, and you get medieval-style Spanish back as copyable text, along with a short note on what changed and what stayed the same.

This is a stylistic converter, not a scholarly edition. It does not reconstruct authentic eleventh- or twelfth-century grammar, and it does not translate into Latin. It applies documented substitutions and leaves everything else alone.

Key Features

Ordered rule application. Phrase pairs are applied first, then whole-word pairs, then intraword letter changes, then the -mente → -mientre suffix rule. The order is stated in every response so results are reproducible.
Word-boundary matching. Whole-word rules only fire on complete words, so a mapped word inside a longer word is not corrupted.
Case-aware output. A capitalized word at the start of a sentence keeps its capital after conversion.
Preservation of unmapped text. Words with no rule are returned unchanged and listed, so you know exactly where the converter stopped. Accents, punctuation, and symbols are kept as typed.
Reverse direction. Old-style text can be sent back toward modern Spanish, with a clear note that reverse mapping is approximate because several modern words can share one medieval form. Where a medieval form is ambiguous, the candidates are listed rather than guessed.

How to Use

Type or paste your modern Spanish text and say you want it converted to medieval Spanish. For example: "Convert to medieval Spanish: Ahora quiero hablar con mi ejército."
Read the converted text in the code block, then check the change list underneath. It shows which phrases, words, letters, and suffixes were replaced.
Ask for a reverse conversion by pasting old-style text and saying "back to modern Spanish." Add more text or request a different tone in a follow-up message.

Example Use Cases

Curiosity about everyday medieval Spanish. You want to see how a simple sentence like "ahora quiero hablar" looks in an older style, and you want the exact substitutions listed.
Creative writing flavor. You are drafting a short story or role-play line set in medieval Castile and want a quick medieval Spanish word swap for a handful of common verbs and nouns.
Classroom demonstration. A teacher shows students how modern Spanish words like hacer, mirar, and ventana relate to older forms such as fazer, catar, and fenestra, with the rule list visible for discussion.
Reverse reading practice. You paste an old-style line and ask for a modern Spanish gloss, keeping in mind that the reverse direction is approximate.

Tips for Best Results

Keep sentences short at first so you can compare each change against the rule list.
If a word you expected to change did not, it is probably outside the configured word list; the response will tell you which words were left untouched.
Treat the output as a stylistic approximation. For academic work, verify forms against a historical dictionary or a scholarly edition.

FAQ

What input format does it accept?
Plain Spanish text, typed or pasted. There is no file upload and no length guarantee beyond practical message limits; very long texts may be split across turns.

How accurate is the result?
It is exactly as accurate as the stated rule set: phrase pairs, word pairs, intraword letters, and the -mente suffix rule. It is not a linguistic reconstruction and should not be cited as authentic medieval Spanish.

How transparent is the conversion?
This agent states the rule order, lists each change, preserves unmapped words, and supports a reverse direction with documented limits. It does not offer a live two-box preview or saved history.

Can it translate into Latin or another language?
No. It converts between modern Spanish and an approximate medieval Spanish style only.

Does it produce audio or images?
No. Output is text only.