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Free Spanish Grammar Checker

Check Spanish spelling, grammar and punctuation free. Every issue underlined where it happens, with the reason attached.

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Spanish grammar checker

Spanish grammar checked with the reason attached

Paste Spanish and every issue is underlined where it happens, labelled spelling, grammar, punctuation or style, with the reason attached. Spanish is written in the Latin alphabet, and gender agreement, accents, ¿ and ¡ are what a checker has to get right in it. This one shows the rule each time, not just the change, so you can accept the fix, ignore it, or learn from it.

How to check Spanish grammar

Three steps. The third is the one most checkers leave out.

1

Paste or upload the Spanish

Type, paste or drop in a document. Spanish is already selected as the language on this page; the menu above the editor also offers the variants described below. If the text turns out to be something else, the detector says so and you can change it.

2

Read the flags

Every flag is underlined in the text and listed beside it. Spelling and grammar flags are errors; punctuation and style flags are judgements, and the label tells you which is which before you decide.

3

Accept, ignore or read why

Click a flag to see the fix and the rule behind it, then accept it or ignore it. Spanish has rules that speech does not reveal, and the reason is there so the same error is not made twice.

What the checker looks at in Spanish

The parts of Spanish grammar and spelling where a checker has to know the language, not just the words.

  • AgreementEvery noun is masculine or feminine, and articles and adjectives agree with it in gender and number: la casa blanca, los coches nuevos. An adjective left in the masculine after a feminine noun is the single most frequent slip in Spanish written quickly.
  • VerbsVerbs carry person, number, tense and mood in their endings, so the subject pronoun is usually dropped and the ending has to be right. The subjunctive after expressions of wish, doubt and emotion (quiero que vengas, not vienes) is where most learner errors sit; native writers more often confuse the preterite and imperfect in narrative, or the conditional and imperfect subjunctive after si.
  • Spelling and diacriticsThe written accent decides both stress and meaning: sí/si, él/el, más/mas, tú/tu, and the question and exclamation words qué, cómo, cuándo, dónde always carry one. Dropping an accent is a spelling error in Spanish, not a stylistic choice.
  • PunctuationQuestions and exclamations open with an inverted mark, ¿ and ¡, placed where the question actually begins, which can be mid-sentence. Dialogue is set with a long dash (raya), not quotation marks. Decimals take a comma in Spain and most of Latin America.
  • Capital lettersDays, months, languages and nationalities are lower case (lunes, enero, español); titles of works capitalise only the first word.

Common mistakes in Spanish writing

Five errors Spanish readers notice at once, and what the checker does with each.

porque, por qué, porqué and por que

Four spellings, four meanings. Por qué asks the question, porque answers it, el porqué is the noun (the reason), and por que is the rare relative construction. The checker flags the one that does not fit the sentence.

Dropped accents on question words

Cómo, cuándo, dónde, qué and quién carry an accent when they ask or exclaim, directly or indirectly (no sé cuándo llega), and none when they merely connect (llega cuando puede).

Gender and number agreement

El problema, el mapa, el día are masculine despite the -a; la mano, la foto, la moto are feminine despite the -o. Adjectives and past participles used as adjectives must follow: las cartas escritas.

Subjunctive after wish, doubt and emotion

Espero que vengas, no creo que sea, me alegra que estés: the indicative in these clauses reads as a mistake to any native reader, and the fix is a different verb ending, not a different word.

Ser and estar

Ser for what something is, estar for how or where it is. Es aburrido (he is boring) and está aburrido (he is bored) are both grammatical, so the checker flags the pair only when the surrounding sentence rules one of them out.

Formal and informal Spanish

Spanish has tú and usted (and vos in parts of Latin America), and the choice changes the verb ending and the possessive: ¿tienes tu pasaporte? against ¿tiene su pasaporte? Mixing the two inside one letter is a grammar error the reader feels immediately.

The checker flags a mixed register as style rather than as an error, so the decision stays yours. If a whole text needs to move from one register to the other, the tone changer rewrites it in one pass.

Who checks Spanish here

1

Students writing essays and applications in Spanish, or Spanish speakers studying in English who write home in Spanish.

2

Customer-facing teams in Spain and Latin America answering email and chat, where the wrong tú or usted lands harder than a typo.

3

Learners at B1 and above who want each correction explained rather than silently applied.

Spanish grammar checker FAQs

Is the Spanish grammar checker free?

Yes. Check Spanish without an account, within the per-check and daily word allowances shown beside the editor. Signing in raises them, and Pro removes the guest limits and the ads. The pricing page lists what each plan includes.

Which Spanish does it check?

The picker has Spanish (Spain) and Spanish (Latin America) as well as plain Spanish. Spain uses vosotros and the leísmo tolerated by the RAE; Latin America uses ustedes for every plural you and, in the Río de la Plata, vos. Spelling is the same on both sides of the Atlantic. Spanish is preselected on this page; change the language menu above the editor if the text is a different variant.

Does it correct Spanish spelling as well as grammar?

Yes, and in Spanish the two overlap. b and v sound the same, as do ll and y in most regions and s, c and z in Latin America, so the errors that survive reading aloud are spellings: haber for a ver, hay/ahí/ay, sino/si no, and echo for hecho. Each of these is underlined where it happens, labelled spelling or grammar, with the standard form and the rule beside it.

Will it rewrite my Spanish?

Not unless you ask it to. A check corrects what is wrong and leaves your sentences as you wrote them; every change is a separate flag you accept or ignore. The Improve and Rewrite passes, which do change wording, are separate buttons, and the paraphraser is a separate tool.

Can I check a whole Spanish document?

Yes. Paste the text or drop in a .docx, .pdf or .txt file; the document is checked paragraph by paragraph and the corrected version can be copied or exported. Long documents are checked within the per-check allowance and continue as you scroll.

Is it useful if I am learning Spanish?

That is where the reason attached to each flag earns its keep. Every noun is masculine or feminine, and articles and adjectives agree with it in gender and number: la casa blanca, los coches nuevos. A learner sees which rule was broken, not just the corrected word, and can accept the fix or read why it was raised before deciding.

After the check

Translate the corrected Spanish, change its tone, or shorten it. One plan covers every tool.