Bike Size Calculator

Estimate road bike frame size from height.

Road frame size 52.5

Mountain frame 20.669

Formula: road frame ≈ height × 0.30

Step-by-step with your numbers:

1. Values used:

2. Height = 175

4. Road frame size = 52.5

5. Mountain frame = 20.669

Did we solve your problem today?

A rough starting frame size from your height (a proper fit also depends on inseam).

The math behind it

road frame (cm) ≈ height × 0.30. Mountain bike frames are quoted in inches.

175 cm → ~52.5 cm road frame.

Best method?

Inseam-based sizing and a professional fit are more accurate.