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3agal Masr Bike Size Calculator
Find your frame height with our frame calculator. All you have to do is know your inseam length the length from the floor to your crotch. This bike size calculator is suitable for both men and women, but not for children.
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*Please note this calculator should be used as a general guide for sizing as many factors go into sizing – including height of the rider. If you have any questions regarding what size you need, please contact 3agal Masr.
Step 1
Stand close to a wall, your feet should be 6-8″ (15-20 cm) apart.
Step 2
Place a hardcover book between your legs to imitate the bike saddle.
Step 3
Note where the book touches the wall.
Step 4
Measure the distance from that point to the floor.
If the value falls in between two sizes, the following general rules apply:
If you want quick and sporty, choose the smaller frame size
If you want comfortable and smooth, choose the larger frame size
Size Matters
Bike size chart​
The tables below show the frame size that best suits your height. 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). The sizes are measured in inches (MTB) or centimeters. You may find both units in the description of the bike.
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Height in cm | Frame Size (Performance / Racing) in cm | Frame Size (Triathlon) in cm |
---|---|---|
155 - 160 | 47 - 49 | 46 - 48 |
160 - 165 | 49 - 51 | 47 - 49 |
165 - 170 | 51 - 53 | 48 - 50 |
170 - 175 | 53 - 55 | 50 - 52 |
175 - 180 | 55 - 57 | 52 - 55 |
180 - 185 | 57 - 60 | 55 - 57 |
185 - 190 | 60 - 62 | 57 - 60 |
190 - 195 | 62 - 64 | 60 - 62 |
Road Bikes

Mountain Bikes

Height in cm | Recommended frame size in cm / inches |
---|---|
150 - 155 | 33 - 36 / 13" - 14" |
155 - 160 | 35 - 38 / 14" - 15" |
160 - 165 | 38 - 40 / 15" - 16" |
165 - 170 | 40 - 43 / 16" - 17" |
170 - 175 | 42 - 45 / 16.5" - 17.5" |
175 - 180 | 44 - 47 / 17.5" - 18.5" |
180 - 185 | 46 - 49 / 18" - 19" |
185 - 190 | 49 - 52 / 19" - 20.5" |
190 - 195 | 51 - 56 / 20.5" - 22" |
Height in cm | Recommended Frame Size in cm |
---|---|
150 - 160 | 42 - 48 |
160 - 170 | 48 - 52 |
170 - 175 | 52 - 55 |
175 - 180 | 55 - 58 |
180 - 185 | 58 - 61 |
185 - 190 | 61 - 63 |
190 - 195 | 63 - 66 |
Hybrid / City Bikes

Kids Bikes

Child's height | Child's Age | Bike Size |
---|---|---|
81 - 93 | 1.5 - 4 | Balance Bike |
89 - 102 | 2 - 4 | 12" |
100 - 117 | 4 - 6 | 16" |
114 - 132 | 7 - 9 | 20" |
130 - 160 | 9 - 12 | 24" |
11 - 12 | 26" |