"Estou contente."
Here's a breakdown:
* Estou - is the present tense of the verb "estar" (to be) and translates to "I am"
* contente - means "glad" or "happy"
Here are some other options, depending on the context:
* "Estou feliz." (I am happy) - This is a more general expression of happiness.
* "Estou satisfeito." (I am satisfied) - This emphasizes contentment.
* "Fico contente." (I am glad) - This uses a more formal conjugation of the verb "ficar" (to become).
The best choice will depend on the specific situation and the level of formality you want to convey.