Todo means all or every when it modifies a noun. Like all adjectives, it agrees in number and gender with the noun that follows. It can also be used as a pronoun when it doesn’t accompany a noun.

Singular   Plural 
Masculine  todo  todos
Feminine  toda  todas

Todo with a Determiner

These forms of todo are most often used with the definite articles el, los, la, las, but they may also be used with a possessive determiner: todos mis hijos all my children, toda su vida all his/her life etc.

Nos quedábamos como hasta las dos de la mañana, con todos los vecinos afuera.
We stayed outside until around two in the morning with all of the neighbors.
Toda mi juventud que yo viví, fue bajo guerra.
My whole youth that I lived was during the war.

Todo without a Determiner

Todo or toda may also be used without a determiner to mean every.

En el campo tienes experiencias en veces con serpientes, con coyotes, con toda clase de animales.
In the country side, you sometimes come across snakes, coyotes, every kind of animal.

Todo in Common Idiomatic Phrases

Here is a list of common idiomatic phrases with todo:

  • todo el mundo everyone
  • todos los días every day
  • todo el día all day long
  • a pesar de todo in spite of everything
  • de todos modos anyway
  • todo recto straight ahead