That s a system used for some road bikes too.
Mens bike frame sizes inches.
51 cm mountain bike.
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.
Mountains bikes now come in three different wheel sizes.
If all three have a 15 frame there will be a height difference between them due to their wheel size.
The tables below show the frame size that best suits your height.
49 cm road bike.
Generally you should be good with a bike that has a frame size of 17 19 inches.
Consider the bike type.
You can find them with 26 wheels 27 5 wheels or 29 wheels.
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.
The sizes are measured in inches mtb or centimeters.
Method 3 bike size chart by height.
That s not true of mountain bikes where the frame size is usually marked s m l etc.
Bike frames are measured from the middle of their bottom bracket to the end of their seat tube.
First consider what kind of bike you want sizing varies greatly between road and mountain bikes as well as between men s and women s models and even between.
You may find both units in the description of the bike.