We usually measure a bike by eye. It only takes a few minutes in the store. We think everything is perfect, the bike size is perfect, so we can pay and take it home. The next day we get on the bike, only to discover after a few kilometers that something doesn't quite fit, that it's not quite what we imagined. Did our eyes fail us? Perhaps! Choosing the right bike size requires greater precision. That's why, before ordering a bike from us, every customer takes a test ride.
Bike size - frame sizes
In reality, bike size is the frame size. Similar to wheels, they are specified in inches: 15, 17, 19 inches, etc. We've covered wheel size selection in a separate guide . You'll also find sizes listed in centimeters or sizes S–XL. Road bike sizes (from 45 to over 60 cm) are listed in centimeters, MTB frame sizes (from 15 to 22 inches) are listed in inches, and trekking and city frames (from 15 to 23 inches) are listed in inches.
When buying a bike online, the bike size is usually listed in the description, making it much easier to obtain the necessary information. When choosing a brick-and-mortar store, you can always ask a salesperson for help or check the size yourself. This is usually located on the seat tube. You can use our calculator or refer to the tables below.
What size bike is best for me?
There are many conversion factors that help calculate frame size based on inseam length. In the previous version of this article, we included one of these, but unfortunately, it caused a lot of confusion and uncertainty, especially since the results didn't always match the tables below. Therefore, we suggest starting your sizing based on your height. If you know that your body proportions, especially your inseam length, differ significantly from average, we strongly recommend trying on a bike in person. It's better to spend a little more time before buying a bike and then enjoy a well-fitting frame.
MTB BIKE SIZE
| frame size (inches) | growth | |
| 13" | 152 - 157 cm | |
| 14" | 157 - 162 cm | |
| 15" | 162 - 167 cm | |
| 16" | 167 - 174 cm | |
| 17" | 174 - 179 cm | |
| 18" | 179 - 184 cm | |
| 19" | 184 - 188 cm | |
| 20" | 184 - 188 cm | |
| 21" | more |
SIZES - CITY AND TREKKING BIKE
| frame size (inches) | height (cm) | |
| 15" | 152 - 162 cm | |
| 16" | 162 - 167 cm | |
| 17" | 167 - 172 cm | |
| 18" | 172 - 175 cm | |
| 19" | 175-178 cm | |
| 20" | 178 - 182 cm | |
| 21" | 182 - 187 cm |
Road bike size
| frame size | height (cm) | |
| 50 cm | 152 - 162 cm | |
| 52 cm | 162 - 167 cm | |
| 53 cm | 167 - 172 cm | |
| 54 cm | 172 - 175 cm | |
| 55 cm | 175-178 cm | |
| 56 cm | 178 - 182 cm | |
| 57 cm | 182 - 187 cm |
It's important to remember that the above tables are generalizations, so it's always a good idea to try on a bike before purchasing. This is because frames vary in geometry, intended use, and measurement methods. Furthermore, most manufacturers use two-inch sizing, so you usually buy a bike in an approximate size. If you're unsure about your size and need to make a choice, it's always worth asking a salesperson for their opinion.
Witam
Proszę o poradę, chciałbym kupić rower trekingowy Unibike. Mam 173 cm wzrostu. Z obliczeń wynika że najlepsza byłaby 18stka ale Unibike robi 17 a potem 19. Będę wdzięczny za poradę.
Powinien być w miarę ok.
Mam okazję kupić rower cros rama 20.5 koła28 a wzrost 180,185 czy będzie odpowiedni
Przyjmujemy właściwie takie same zasady jak w szosie, więc w przypadku tej Kony skłaniałbym się ku rozmiarowi 54, chyba, że dysponuje pan długimi nogami, wtedy warto też sprawdzić 56.
Pozdrawiam
Witam. Mam 177 cm wzrostu (mężczyzna), zamierzam kupić gravel, interesuje mnie szczególnie kona sutra (męska). Czy rama 20 cali będzie odpowiednia? Nie wiem bowiem jak liczyć gravel, bo pomimo (na pierwszy rzut oka) zbieżności z szosowym, to chyba inna zasad doboru rozmiaru ramy? Z góry dziękuje za pomoc
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