"when do you use tengo and estoy?"

Question

When do you use tengo or estoy?

Answer 1

Welcome to the forum. That's a loaded question. It's like me asking you when do you use I have and I am? The only thing that comes to mind with your question is what verb do you use in Spanish to tell your age. The answer is tener.

English ... I am 17 years old.

Spanish... Tengo 17 años.

Be more specific and we'll be able to help you.

Answer 2

Mmm, pretty ambiguous question, I will try to explain with this:

I have (a dog, a cat, a chair, etc.)-> tengo.

I am (sad, old, happy, fat, etc.) -> Estoy.