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How to Say "thousands" in Spanish

The most common Spanish word for “thousands” is “mil” — use 'mil' when referring to a large, indefinite quantity, often in phrases like 'mil gracias' (a thousand thanks) or when counting large numbers, but it's less common than 'miles' for 'thousands of'.

English → Spanish

mil

meelmil

nounA2general
Use 'mil' when referring to a large, indefinite quantity, often in phrases like 'mil gracias' (a thousand thanks) or when counting large numbers, but it's less common than 'miles' for 'thousands of'.
A vast, dense swarm of thousands of colorful butterflies filling the blue sky.

Examples

Necesito mil disculpas por llegar tarde.

I need a thousand apologies for arriving late.

Hay miles de personas en la playa.

There are thousands of people on the beach.

Te lo he dicho mil veces: ¡limpia tu cuarto!

I've told you a thousand times: clean your room!

¡Mil gracias por tu ayuda!

A thousand thanks for your help!

Using 'Miles de'

To say 'thousands of something', you use the pattern 'miles de + thing'. For example, 'miles de estrellas' (thousands of stars). Don't forget the 'de'!

Forgetting 'de'

Mistake: “Vi miles personas en el concierto.”

Correction: Vi a miles de personas en el concierto. When using 'miles' to mean 'a lot of', you always need to add 'de' before the noun.

miles

MEE-lessˈmiles

nounA2general
Use 'miles' (plural of 'mil') when you mean 'thousands of' something, indicating a very large, unspecified quantity of items or people.
A vast, dense field covered entirely by small, brightly colored pebbles stretching far into the distance, symbolizing a large quantity.

Examples

Hay miles de estrellas en el cielo.

There are thousands of stars in the sky.

Gastaron miles de euros en el viaje.

They spent thousands of euros on the trip.

Te lo he dicho miles de veces, ¡limpia tu cuarto!

I've told you thousands of times, clean your room!

Always Use 'de' After 'Miles'

When you say 'thousands of something', you must put the word 'de' between 'miles' and the thing you're talking about. For example, 'miles de libros' (thousands of books).

Always Masculine and Plural

'Miles' itself is always treated as a masculine, plural word, even if the noun that follows it is feminine. For example, you say 'los miles de personas' (the thousands of people).

Confusing 'Miles' (Thousands) with 'Millas' (Miles)

Mistake: “Corrí cinco miles esta mañana.”

Correction: Corrí cinco millas esta mañana. 'Miles' always means thousands. The word for the unit of distance is 'millas'. This is a very common mix-up for English speakers!

Forgetting the 'de'

Mistake: “En la biblioteca hay miles libros.”

Correction: En la biblioteca hay miles de libros. Don't forget to add 'de' to connect 'miles' to the noun that comes after it.

millar

mee-YARmiˈʎar

nounB1general
Use 'un millar' or 'miles de' (less common) when referring to a specific large quantity, like one thousand units, often used for countable items in bulk.
A vast, neatly organized grid of small, colorful wooden blocks filling the entire frame.

Examples

Compramos un millar de hojas de papel para la oficina.

We bought a thousand sheets of paper for the office.

Millares de personas protestaron en las calles.

Thousands of people protested in the streets.

El costo por millar de ladrillos ha subido este mes.

The cost per thousand bricks has gone up this month.

Using 'de' with millar

Unlike the number 'mil', the word 'millar' always needs the word 'de' (of) before the thing you are counting. Think of it like saying 'a group of' a thousand.

Millar vs. Mil

Use 'mil' for exact counting (1,000). Use 'millar' when you want to emphasize the total set or group of a thousand, especially in business or when talking about huge crowds in the plural.

Forgetting the 'de'

Mistake: “Un millar personas.”

Correction: Un millar DE personas. Because 'millar' acts like a regular noun (like 'box' or 'group'), it needs 'de' to connect to the next word.

Confusing 'miles' and 'millar'

Learners often confuse 'miles' and 'millar'. Remember that 'miles' is the most common and versatile way to say 'thousands of' for an indefinite large number. 'Un millar' specifically means 'a thousand' and is used for a more defined quantity, usually of countable items.

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