The deciding factor for the size of a bicycle is the frame in particular the seat post the distance from the center of the bottom bracket to the top of the seat post.
Mens bike frame sizes inches.
The tables below show the frame size that best suits your height.
That s a system used for some road bikes too.
Mountains bikes now come in three different wheel sizes.
51 cm mountain bike.
Bike frames are measured from the middle of their bottom bracket to the end of their seat tube.
Merida s road bikes go through s s m m l and l.
The sizes are measured in inches mtb or centimeters.
Imagine your leg inseam is 74cm then the best frame sizes for you are.
You can find them with 26 wheels 27 5 wheels or 29 wheels.
Hybrid bike inseam in cm x 0 685 your frame size mountain bike inseam in cm x 0 66 your frame size road bike inseam in cm x 0 70 your frame size.
The kind of bike you should have depends on your preferred riding style if you enjoy riding on paved surfaces and also off road then a hardtail mountain bike with a 29 wheels is something you will enjoy.
That s not true of mountain bikes where the frame size is usually marked s m l etc.
You may find both units in the description of the bike.
49 cm road bike.
Method 3 bike size chart by height.
Generally you should be good with a bike that has a frame size of 17 19 inches.