How far is Copenhagen City from CPH?

Hello. I will have to go on a business trip to Copenhagen. I will go there with an airplane. So I need to travel from airport to the city. How far is Copenhagen City from CPH? I dont know if I should use taxi. Does anyone has any opinion about this_ Suggestions are also welcomed. Thanks.

Copenhagen is a beautiful city. I was there 3 months ago. It was very cold then. So the transport from airport to the city was my main problem. It was strange because in my town was very worm in that time. But in Copenhagen was much colder. So when I got out of plane I was in a little shock. Good thing is that Airport is only 8km far from City of Copenhagen. You have a lot of taxis on the airport. So you can find ride very fast. I also think that I saw mini-bus that goes to the city. I suppose that it is cheaper way to travel.