Does ocho change form depending on the noun?

Cardinal numbers in Spanish — with the sole exception of uno, which becomes una before feminine nouns — are invariable. Ocho stays the same whether you say ocho libros (eight books) or ocho casas (eight houses).

How do you say 'eighth' in Spanish?

The ordinal form of eight is octavo (masculine) or octava (feminine). For example: Vivo en el octavo piso — I live on the eighth floor.

How do you form numbers with ocho, like 18 or 800?

Eighteen is dieciocho (a single word combining diez and ocho). Eighty is ochenta. Eight hundred is ochocientos (masculine) or ochocientas (feminine).

Spanish vocabulary · Beginner

How to Say Eight in Spanish: Ocho

Written by Sofia Ramirez, Lead Spanish Curriculum Editor · Reviewed May 2026

Ocho · noun (masculine) and adjective · OH-choh

The Spanish word for eight is <b>ocho</b>. It is one of the basic cardinal numbers and appears constantly in everyday conversation, from telling time to counting objects.

OH-choh

Tengo ocho hermanos en total.

I have eight siblings in total.

How Native Speakers Use Ocho

Real example sentences across three contexts you'll actually run into.

Telling time

La reunión es a las ocho de la mañana.

The meeting is at eight in the morning.

Scheduling an appointment or event.

Age

Mi sobrino tiene ocho años y ya lee muy bien.

My nephew is eight years old and already reads very well.

Talking about a child's age and abilities.

Counting items

Necesitamos ocho sillas más para la cena.

We need eight more chairs for dinner.

Preparing for a gathering.

Avoid These Mistakes When Using Ocho

Confusing ocho with ochenta

Incorrect: Tiene ocho años. (meaning 80)

Correct: Tiene ochenta años. (for 80)

Ocho means eight, while ochenta means eighty. Mixing them up can create a big misunderstanding, especially when discussing ages or quantities.

Adding gender agreement

Incorrect: Tengo ocha manzanas.

Correct: Tengo ocho manzanas.

Unlike adjectives, Spanish cardinal numbers do not change form for gender. Ocho stays ocho regardless of whether the noun is masculine or feminine.

Lock in Eight Vocabulary with the Parrot Method

Why word lists alone don't stick

Memorizing a translation feels productive, but most learners forget 70% of what they studied within 48 hours. Vocabulary needs spaced repetition AND real-world exposure to transfer to long-term memory.

See Ocho used by native speakers

Parrot's short-form videos feature native speakers using ocho in real situations. Context-based exposure beats flashcards, you hear Tengo ocho hermanos en total. while watching someone live the moment, connecting meaning, sound, and rhythm at once.

Save, review, repeat, stay consistent

Tap any word to save it. Parrot's spaced-repetition system surfaces it right before you'd forget, no manual flashcard creation. The watch, parrot back, save, review cycle turns recognition into fluency at 2.7x the speed of traditional study.

Common Questions About Eight in Spanish

Does ocho change form depending on the noun?: Cardinal numbers in Spanish — with the sole exception of uno, which becomes una before feminine nouns — are invariable. Ocho stays the same whether you say ocho libros (eight books) or ocho casas (eight houses).
How do you say 'eighth' in Spanish?: The ordinal form of eight is octavo (masculine) or octava (feminine). For example: Vivo en el octavo piso — I live on the eighth floor.
How do you form numbers with ocho, like 18 or 800?: Eighteen is dieciocho (a single word combining diez and ocho). Eighty is ochenta. Eight hundred is ochocientos (masculine) or ochocientas (feminine).