How do you say I am cold in Spanish?

There are a few ways to say "I am cold" in Spanish, depending on the context and level of formality:

Formal:

* Tengo frío. (This is the most common and neutral way to say it.)

Informal:

* Tengo frío. (This is also acceptable in informal situations.)

* Hago frío. (This is more colloquial and literally means "I do cold," but it's perfectly understandable.)

* Estoy frío/a. (This literally means "I am cold," and it emphasizes the feeling of being cold.)

You can also add more detail, for example:

* Tengo mucho frío. (I am very cold.)

* Tengo frío en las manos. (I am cold in my hands.)

* Estoy congelado/a. (I am frozen.)

The best option will depend on the specific situation and your level of comfort with different levels of formality.