How to Say "I am OK" in Turkish

In English if someone asks how are you we can say I am OK, or we could say the movie was OK.
Can we say "tamam" or "peki" and use it like OK in Turkish?


The answer is no and here is why;

• It would mean totally different;

example:
-What was his answer to that question?
-It (his answer) was okay - Pekiydi / Tamamdı

Only in such a conversation this word would make some sense.

• So we need to use the word "iyi" to mean OK

I am OK - İyiyim
The film was OK - Film güzeldi / iyiydi

Let's learn some more;
if it is just so-so movie then
Film fena değildi or
İdare eder --yes it is present even though the question is past tense

and for a person;
I am so-so Fena değilim / Fena değil / İdare eder

When it is an answer for a person, I would say it is a bit informal to say "İdare eder"