Yesterday I used the Competitive Cyclist fit calculator to get an idea of what size road bike I should be looking at. Now, bearing in mind I took the measurements alone, and that I have also test ridden 3 different size bikes, how accurate is the calculator?

Below are posted my results:

The Competitive Fit (cm)
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Seat tube range c-c: 54.3 - 54.8
Seat tube range c-t: 56.0 - 56.5
Top tube length: 61.2 - 61.6
Stem Length: 12.2 - 12.8
BB-Saddle Position: 84.1 - 86.1
Saddle-Handlebar: 58.6 - 59.2
Saddle Setback: 2.4 - 2.8


The Eddy Fit (cm)
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Seat tube range c-c: 55.5 - 56.0
Seat tube range c-t: 57.2 - 57.7
Top tube length: 61.2 - 61.6
Stem Length: 11.1 - 11.7
BB-Saddle Position: 83.3 - 85.3
Saddle-Handlebar: 59.4 - 60.0
Saddle Setback: 3.6 - 4.0


The French Fit (cm)
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Seat tube range c-c: 57.2 - 57.7
Seat tube range c-t: 58.9 - 59.4
Top tube length: 62.4 - 62.8
Stem Length: 11.3 - 11.9
BB-Saddle Position: 81.6 - 83.6
Saddle-Handlebar: 61.1 - 61.7
Saddle Setback: 3.1 - 3.5


If I am reading this right, judging by the Competitive Fit results, I should be looking at a 60cm bike? Which going by my experience of test riding bikes is about right. I have tried a 58, 60 and 61cm bike and felt comfortable on all of them.

I just want to make sure I am reading the results correctly, especially as I am likely to be looking at buying a used bike and maybe unable to test it first (looking on eBay for example).

Thanks.