How big is a mosquito?

I'm almost positive that most mosquitoes are very similar in size and only vary a little bit. What I believe the last poster was referring to was a Crane Fly which is often confused with a mosquito. Crane Flies are harmless, the only thing they enjoy doing is swarming lights and dive-bombing your face while you're trying to sleep.

Previous answer by another user: Yesterday I saw a very big mosquito at my flat. They come up fr the sink pipe and It was 2cm big. that's the biggest one i've seen so far. :(