The most common way to say "I am tired" in Spanish is:
- Estoy cansado (if you are male)
- Estoy cansada (if you are female)
This phrase is widely understood and used to express physical or mental tiredness. Another way is "Me siento cansado/a," meaning "I feel tired," which emphasizes the subjective feeling. If you want to express being very exhausted, you can say "Estoy agotado/a" (I am exhausted). For feeling sleepy, you can say "Tengo sueño" (I am sleepy).
