What size road bike do I need?

700c wheels are standard across every bike in this roundup, so sizing comes down to frame size in centimeters. Reviewers in r/bicycling repeatedly stress getting a bike fit, especially when ordering online, because direct-to-consumer brands like Tommaso and SAVA ship in cardboard boxes without an in-store fitting. Most listings publish a height range per frame size; err toward the smaller size if you fall between two.