I'm building a fixie right now and i was wondering what the appropriate size (in cm) is for a person 6'0".

depends

same size as ur other bikes. this is something that is asked over and over and over, but not every 6 foot person is the same. this is something you just have to figure out urself. OMGz I can haz nO helPz fr0m intrawEb?!11?!

i am 6'0" and i ride a 56cm steamroller...the top tube on these is a bit longer

dude, ur just giving misinformation.

no 6 0 person is the same and the OP needs to figure it out for his/her self. this same exact post pops up every week and needs to be locked.

you're right...thought i would offer something up
lock it up!

and actually the op says the build is in process so maybe they are going to shrink or extend the bike based on our recommendations...neat!

competitivecyclist.com has a fit calculator to get you in the ballpark. I suggest you get fitted at a LBS that does it a lot. Serotta has a course to get certified at bike fitting; if the LBS has that, you're good to go. SheldonBrown.com has articles and links on bike fitting; good stuff to read.

i like this sizing write up:

https://www.rivbike.com/article/bike_...g_a_frame_size

my guess would be 56-57 cm

A 56-57cm what?

Your inseam measurement would be more useful that your total height.

Example- my inseam is 30 in. The average size of my bike collection is 53cm.

Heres a VERY rough suggestion: Multiply your inseam inches by 1.76 and interpret the
result in cm for the frame size you should try.

There are way too many variables to adequately cover this in a simple forum posting. I'll tell you what I ride and why, maybe that will help you determine your needs.

I'm 5'10ish with a 33" floor to pubic bone measurement. My main road bike, a Surly LHT is a 56cm frame, but the fixed gear frame I just ordered is a 58cm. Why? Surly frames tend to have longer top tubes for a given size. My LHT has a 570mm effective top tube, but the fixie, while a 58cm, also has a 570mm top tube. Different "size" bikes, but same effective top tube. If the top tube is the same length between two models, I prefer the larger frame to reduce saddle to bar drop, but you may want more drop and prefer a smaller frame if the top tube measurement is the same.

So, we have three variables here: Standover, top tube, and fit preference. Standover is easy to determine by measuring from the floor to your pubic bone. Top tube length is easy to measure, but hard to determine what is right for you unless you know from experience. Fit preference is even harder to determine for a 3rd party. I prefer a more upright riding postition (as shown by the stack of headset spacers on my bikes), but you may want something lower.

What do you ride now? What are the frame dimensions? What are your dimensions? What do you like/dislike about the fit of your current bike(s)?

Chris

top tube / seat tube