Feb
17
Half and Half
There are two words in Spanish that mean “half.” They are medio and mitad. And while they appear to be used interchangeably, the truth is is that there is a subtle distinction between the two. Depending on context, the word “medio” has various meanings (average, medium, middle, etc.) but there isn’t room to get into all of those meanings here in this one blog entry. Instead, I’m focusing on the meaning of “half” when it refers specifically to quantity.
Here is what you need to know:
Medio can be an adjective or adverb when referring to quantity. When it is used as an adjective, it agrees with the noun that it is describing. Use “medio” when referring to a single object or something that can be perceived as a unit.
medio kilo (half kilo) una hora y media (an hour and a half) medio bocadillo (half a sandwich)
When medio is used as an adverb it means “kind of” or “rather.”
Juan está medio loco. (Juan is half crazy. Juan is kind of crazy. Juan is not all there.)
Paco está medio dormido. (Paco is half-way asleep. Paco is kind of asleep.)
Mitad is always a noun. Use mitad when referring to a single object OR various objects that make up a whole.
For example, medio and mitad are both correct in the following statements:
He leído medio libro. He leído la mitad del libro. (I’ve read half the book.)
However, if you are referring to the quantity of pages, i.e. parts of a whole, then the only option is: “He leído la mitad de las páginas.” (It is incorrect to say “He leído medias páginas.”)
Photo: “Dinner” by apg

Excellent post!
Thanks a lot for making the distinction clear.
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Gracias – muy útil!
and how to say: “I’ve completed more than a half of my homework”?
He hecho mas que mitad de mi tarea ????
Gracias, chicos, for the positive feedback.
@Eugene…yes, you’ve got the right idea. Just a small change… “He hecho más de la mitad de mi tarea.” (Use the preposition “de” when referring to quantities in sentences like yours that use the construction “more than” or “less than”. “Hay más de 20 personas en el restaurante.” Use “que” when referring to/making comparisons to people or things. “He hecho más que tú.”)
If you use “que” in the context with numbers, you can often translate it with “than”: Tengo más que tú.