How to ask “How old is your son?” using hijo in Spanish

Introduction

Learning how to ask about someone’s child is a common and useful skill for Spanish learners. This article explains how to ask How old is your son? using hijo and related vocabulary. You will find clear examples, polite variations, regional differences, and usage notes to help you speak naturally in everyday conversations.

Basic question: How to ask How old is your son?

The simplest and most direct way to ask How old is your son? in Spanish is using the verb tener. The structure is the same as asking How old are you? but you replace the subject with the possessive and the noun hijo.

Example:

¿Cuántos años tiene su hijo?
How old is your son?

Here, su hijo uses a formal or third-person possessive su. If you are talking to a friend or family member, use the informal possessive.

Informal vs. formal possessives

Spanish distinguishes between informal and formal ways to say your. For a friend, colleague, or someone you address with tú, use tu hijo. For a stranger, elder, or someone you address with usted, use su hijo. Notice that the question form changes only by the possessive word.

Informal example:

¿Cuántos años tiene tu hijo?
How old is your son? (to someone you know well)

Formal example:

¿Cuántos años tiene su hijo?
How old is your son? (polite / formal)

Alternative verbs: Using ser versus tener

While tener is the standard verb to express age in Spanish, some regions and contexts use ser followed by edad descriptions. This is less common for asking directly, but it’s useful to know.

Example with tener (most common):

¿Cuántos años tiene tu hijo?
How old is your son?

Example with ser (less common in questions):

¿Qué edad tiene tu hijo?
What age is your son?

Both constructions are understood and widely used. Qué edad tiene is slightly more formal and explicit, while ¿Cuántos años tiene…? is very conversational.

Using names and clarifying who you mean

If the person has more than one child, or if you want to ask about a specific son by name, include the name after hijo or use the name directly. You can also use possessives to clarify.

Examples:

¿Cuántos años tiene tu hijo Marcos?
How old is your son Marcos?

¿Qué edad tiene el hijo de Ana?
How old is Ana’s son?

Shorter, casual ways to ask

In casual conversation, native speakers often shorten the question. These shorter forms are common among friends and family.

Examples:

¿Y el hijo qué edad tiene?
And the son, what age is he?

¿Tu hijo cuántos tiene?
How many (years) does your son have? (very casual)

These forms are relaxed; use them with people you know well.

Polite and indirect phrasing

If you want to be more polite or less direct—useful in formal contexts or when you suspect the topic might be sensitive—you can phrase the question more indirectly.

Examples:

Si no es indiscreción, ¿qué edad tiene su hijo?
If it is not indiscreet, what age is your son?

Me gustaría saber la edad de su hijo.
I would like to know your son’s age.

These options soften the question and show respect in formal or unfamiliar situations.

Negative and surprise responses

When someone replies, you might want to express surprise, confirmation, or disbelief. Here are natural responses you can use in Spanish to react to the age you hear.

Examples:

¡No me digas! ¿Solo tiene cinco años?
No way! He is only five years old?

¿En serio? Pensé que tenía más.
Really? I thought he was older.

Qué joven. Tiene mucha energía, ¿no?
So young. He has a lot of energy, right?

Gender and plural forms: hija and hijos

Because Spanish nouns have gender, if you ask about a daughter use hija, and to ask about children in general use hijos (or hijos e hijas depending on inclusivity). The question structure is the same; only the noun changes.

Examples:

¿Cuántos años tiene tu hija?
How old is your daughter?

¿Qué edad tienen tus hijos?
How old are your children?

Short dialogues with contextual phrases

Below are short sample dialogues that use hijo in natural settings. These show how to follow up after asking the age.

Dialogue 1 — meeting a neighbor:

Hola, soy María. ¿Y usted?
Mucho gusto, soy Carlos. ¿Y este es tu hijo?
Sí, se llama Leo. ¿Cuántos años tiene?
Tiene tres años.
Qué lindo. ¡Felicidades!

Dialogue 2 — parent at the park:

¡Qué bien corre tu hijo!
Gracias. Tiene seis años y no para.
Se nota. A esa edad tienen mucha energía.

Common mistakes to avoid

Beginners often make predictable errors when asking about age. Here are tips to avoid them.

1. Using ser with an age number directly: In Spanish, do not say Él es cinco años. Instead say Él tiene cinco años or Él tiene cinco. If you use ser, you must phrase it as Él es de cinco años in some contexts, but this sounds awkward.

Correct: Él tiene cinco años.
Incorrect: Él es cinco años.

2. Using the wrong possessive: Remember the difference between tu hijo and su hijo. Using su with friends can sound overly formal; using tu with strangers can be impolite in formal contexts.

3. Forgetting accent marks in written Spanish: While speaking is not affected, writing ¿Qué edad tiene…? needs the accent on qué. Pay attention to accents when reading and writing.

Regional variations and colloquial expressions

Spanish varies across countries, and speakers may have different colloquial ways to ask about age. These are useful to recognize but not necessary to master at first.

In Mexico and parts of Central America you may hear ¿Cuántos años tiene tu chamaco? using chamaco for kid. In Argentina and Uruguay, pibe is common: ¿Cuántos años tiene tu pibe? Neither chamaco nor pibe is standard in all countries, so stick to hijo until you learn regional vocabulary.

Example regional alternatives:

¿Cuántos años tiene tu chamaco? (Mexico)
¿Cuántos años tiene tu pibe? (Argentina)

Pronouns and formal subject agreement

When forming the question, the verb usually agrees with the person who has the child, not the child. The typical formula is Cuántos años + tener conjugated for third person singular, because the question asks about the age of the son, not the years themselves.

Example:

¿Cuántos años tiene su hijo?
Note that tiene is third person singular. If you refer to multiple children, use tienen.

Practice phrases to memorize

Memorize a few key phrases to feel comfortable asking about age. Keep the first phrase handy because it fits most situations.

Key phrases:

¿Cuántos años tiene tu hijo?
¿Cuántos años tiene su hijo?
¿Qué edad tiene tu hijo?
¿Qué edad tiene su hijo?
Mi hijo tiene siete años. (My son is seven years old.)

Usage notes: tone, context, and cultural sensitivity

Asking someone’s child’s age is usually a neutral topic, but be mindful of tone and context. Avoid pressing for personal details if the person seems uncomfortable. In many Latin cultures, asking about children is friendly and a common way to build rapport, but always respect privacy.

When in doubt, use the indirect or polite forms described earlier, and follow the other person’s lead in how much detail they share.

Additional vocabulary related to children

Knowing related words helps you expand conversations naturally. Learn these common terms alongside hijo.

Words to know:

hijo — son (first appearance bold; subsequent italic)
hija — daughter
hijos — children/sons (plural)
edad — age
año — year
bebé — baby
niño — boy / child
niña — girl / child

Conclusion

Asking How old is your son? in Spanish is simple once you know the core phrases. Use ¿Cuántos años tiene tu hijo? for informal situations and ¿Cuántos años tiene su hijo? for formal ones. Remember to use tener for age, be sensitive to context, and practice the polite and casual variants to sound natural. With these patterns and examples, you will be ready to ask and respond confidently in everyday conversations.