The word for 10 (ten) in Spanish is diez. You use it when counting, giving an age, saying a time, and describing a quantity. It is a short word, but learning it inside useful phrases will help you recognize it much more quickly than memorizing the spelling alone.
Quick answer:
10 = diez. In much of Latin America, it sounds approximately “dyehs.” In much of Spain, the final sound is like the “th” in “thin.”
How Do You Say 10 in Spanish?
Diez means “ten.” It comes after nueve (“nine”) and before once (“eleven”). Write it as one word, with no written accent. The Real Academia Española’s entry for diez identifies it as the number after nine and also records its use in expressions for dates and the time.
Example: Tengo diez libros. — I have ten books.
Place diez before the noun when saying how many things there are: diez libros, “ten books,” and diez personas, “ten people.” The noun is normally plural. The number itself stays the same with masculine and feminine nouns, so there is no separate feminine form such as “dieza.”
You can also use it on its own as an answer. If someone asks ¿Cuántos necesitas? (“How many do you need?”), Diez is enough when the object is already understood. In a complete sentence, you might say Necesito diez — “I need ten.”
Useful Forms Related to Ten
1. Diez — Ten
Diez is the cardinal number, used for a quantity. Diez minutos is “ten minutes,” and diez euros is “ten euros.” It can also be a label or identifying number, such as la habitación diez, “room ten.” In that phrase, you are identifying a room rather than counting ten rooms.
2. Décimo / Décima — Tenth
Décimo and décima mean “tenth.” They describe position in a sequence: el décimo capítulo, “the tenth chapter,” or la décima página, “the tenth page.” Unlike diez, this adjective changes its ending to match the noun. Both forms have a written accent on the first vowel.
3. Una Decena — A Group of Ten
Una decena refers to a group of ten. Una decena de libros is a group of ten books; in a less exact context, an expression of this kind may communicate roughly ten. It is useful vocabulary, but diez libros is the clearest beginner choice when the exact quantity matters.
4. Diez De — Ten Of
Use diez de when selecting ten from a particular group: diez de los estudiantes, “ten of the students.” Compare this with diez estudiantes, simply “ten students.” The first phrase points to a known larger group, while the second gives a quantity without that extra relationship.
The word de is not required between every number and noun. Say diez libros for “ten books,” rather than adding de automatically. Learn diez de los libros separately as “ten of the books.”
Ten in Spanish: Quick Comparison
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| Spanish | English | Main use |
|---|---|---|
| diez | ten | A quantity or number |
| diez libros | ten books | Counting objects |
| el número diez | the number ten | Talking about the number itself |
| décimo / décima | tenth | Position in a sequence |
| una decena | a group of ten | Grouping or describing a set |
| las diez | ten o’clock | Telling the time |
| diez años | ten years / ten years old | Duration or age, depending on the sentence |
How to Pronounce Diez
Diez is normally one syllable. The ie moves smoothly together, rather than forming two separate beats. Start with a d, move through a brief y-like glide, and finish with the final consonant. Avoid pronouncing it as the English words “die” and “ez” placed together.
The final z has regional pronunciations. Across much of Latin America and in parts of Spain, it has an s sound. In much of Spain, it has the voiceless th sound heard in English “thin.” Both are established Spanish pronunciation patterns. They do not change the spelling or the meaning of the number.
The English guide “dyehs” is approximate. Keep the vowel clear and the word short; do not stretch it into several syllables. Listen first to the single word, then practice it in a phrase such as diez minutos. The connection between words will make the pronunciation feel more natural.
Counting to Ten and Beyond
Here are the numbers from one to ten. Practice the sequence in order, then test yourself with individual numbers so you can recall diez without starting at one every time.
- 1 — uno
- 2 — dos
- 3 — tres
- 4 — cuatro
- 5 — cinco
- 6 — seis
- 7 — siete
- 8 — ocho
- 9 — nueve
- 10 — diez
After ten, Spanish uses once, doce, trece, catorce, and quince for eleven through fifteen. Do not build eleven as “diez uno.” From sixteen through nineteen, the modern spellings are dieciséis, diecisiete, dieciocho, and diecinueve.
Notice that dieciséis has a written accent, while diez does not. These spellings are worth learning as complete words. Recognizing a shared beginning can help you remember the teens, but it does not mean you should invent a new spelling by joining any two number words.
Using Ten for Time and Age
For “It is ten o’clock,” say Son las diez. For “at ten o’clock,” say a las diez. The first expression tells the current time; the second tells when something happens. Compare Son las diez with La clase empieza a las diez — “The class starts at ten.”
To give someone’s age, use tener: Tiene diez años means “He or she is ten years old.” Spanish describes age with the equivalent of “has ten years,” rather than copying the English verb “is.” For a first-person statement, Tengo diez años means “I am ten years old.”
In a duration, the surrounding words determine the meaning: durante diez años means “for ten years.” For a date, el diez de mayo means “May tenth” or “the tenth of May.” Here Spanish uses the cardinal number diez, even though the English translation often uses “tenth.”
Example Sentences Using Ten
These examples show the same number in different situations. Pay attention to the verb and the words following diez, because they tell you whether the sentence concerns a quantity, a time, or a duration.
Use: Use diez before a plural noun when asking for an amount of time.
Use: A las diez gives the time of an event. It does not mean that the meeting lasts ten hours.
Use: Hay introduces the existence of something. Diez personas gives the number of people.
You might also hear Cuesta diez euros — “It costs ten euros.” For a count from a known group, Quiero diez de estas means “I want ten of these,” with estas referring to feminine plural items already visible or understood.
Common Mistakes
Do not add a written accent to diez. Do not change it to agree with a feminine noun: diez mesas, “ten tables,” is correct. Remember to make the noun plural when counting more than one item, and do not add de unless the construction actually requires it.
Keep diez and décimo separate. “Ten books” is diez libros, while “the tenth book” is el décimo libro. Dates are a useful exception to the English pattern: el diez de mayo uses diez rather than the ordinal, even though English commonly says “May tenth.”
Frequently Asked Questions About 10 (Ten) in Spanish
Tap a question below to see the answer.
How do you say 10 in Spanish?
Say diez. It comes after nueve and before once. Write it as one word without an accent mark.
Is diez one syllable or two?
It is normally one syllable. The ie forms a smooth glide. Listen to the whole word and avoid separating it into two English-style syllables.
Why does the final z sometimes sound like th?
In much of Spain, z has the sound heard in English “thin.” Across much of Latin America and in parts of Spain, it sounds like s. These regional patterns do not change the meaning of diez.
Does diez change with feminine nouns?
No. Use the same number in diez libros and diez mesas. The noun is plural, but diez itself does not acquire a feminine ending.
How do I say ten o’clock?
Son las diez means “It is ten o’clock.” A las diez means “at ten o’clock,” as in Nos vemos a las diez, “See you at ten.”
What is tenth in Spanish?
Use décimo with a masculine noun and décima with a feminine noun: el décimo capítulo and la décima página. Keep the accent mark.
Summary
10 (ten) in Spanish is diez. It stays the same with masculine and feminine nouns: diez libros and diez personas. Practice its one-syllable pronunciation and recognize both common regional sounds of the final z.
Useful expressions include diez minutos, Son las diez, and Tiene diez años. When you mean a position such as “tenth,” use décimo or décima instead. Learning the complete phrase will help you choose the right form quickly.
