Can someone explain the differences between '입니다' '습니다' '니다' and '이다?'
When I am listening to Korean conversation and someone is introducing his or herself, they use different endings. I know it's between the two verbs '있다' and '이다,' but I'm so used to introducing myself using the respectful way '이에요/예요.'

Could someone be kind enough and explain when to use each of those? Which would you use after a consonant and which would you use after a vowel?

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Question

Can someone explain the differences between '입니다' '습니다' '니다' and '이다?'
When I am listening to Korean conversation and someone is introducing his or herself, they use different endings. I know it's between the two verbs '있다' and '이다,' but I'm so used to introducing myself using the respectful way '이에요/예요.'

Could someone be kind enough and explain when to use each of those? Which would you use after a consonant and which would you use after a vowel?

정말 감사합니다, 친구들!

Answer

hello. 
my name is Kyle. 


이다 = 입니다 (they are the same meaning) 
informal = formal 

니다 is a wrong word. 

so, you can use the word, 이다 / 입니다 / 습니다, as follows: 
i'm a student = 나는 학생이다. / 저는 학생입니다(formal) 
i have a car = 나는 차를 가지고 있다/있습니다(formal).

Answer

generally, 
 
verb + 습니다

noun + 입니다