Bicycle size guide for Gravel

Choosing the right size for your bicycle gravel It is essential to enjoy comfortable, safe routes with maximum performance. In this guide you will find all the information you need: how to take your measurements correctly, equivalence tables according to height and inseam, recommendations according to the type of terrain and the differences between geometries. Whether it's your first bike gravel As if you want to improve your position on the saddle, here you will clear all your doubts to find the perfect size.

Why is it important to choose the correct size?

Ride a bicycle gravel With the right size it makes a difference. A correct size allows you to make the most of your energy, maintain a comfortable posture and pedal steadily without overloading your body. In addition, it helps prevent knee, back or neck discomfort and reduces the risk of injuries in the medium and long term. Whether for trail riding, off-road adventures or mixed weekend outings, a mountain bike gravel Adapted to you, it guarantees more control, efficiency and comfort with every kilometer.

Bicycle size chart for Gravel

Equivalence by height and inseam

To know which size of bicycle you need, the most accurate method is to combine your height with your inseam measurement. This allows you to calculate the ideal seat tube length and choose the frame that best fits you.

Size chart in cm and inches (S, M, L, XL...)

Below, you can check a reference table with the recommended sizes according to your measurements. Remember there may be small variations depending on the geometry and brand of the bicycle.

Height (cm)	Inseam (cm)	Frame Size (cm)	Standard Size	Size in Inches
150 – 160	65 – 70	47 – 49	XS	18.5” – 19.3”
160 – 170	70 – 75	50 – 52	S	19.6” – 20.4”
170 – 175	76 – 80	53 – 54	M	20.8” – 21.2”
176 – 182	80 – 85	55 – 56	L	21.6” – 22.0”
183 – 190	85 – 90	57 – 59	XL	22.4” – 23.2”
190+	90+	60 – 62	XXL	23.6” – 24.4”

Already know your size? Explore available Gravel bicycles directly

Gravel Size S Gravel Size M Gravel Size L Gravel Size XL

How to calculate your ideal size with a formula

If you don't want to rely solely on a chart, you can calculate your bicycle size using a simple formula based on your inseam length. You only need a measuring tape and to follow these steps:

Step 1: measure your inseam

Stand barefoot against the wall, with your legs straight and about 15 cm apart. Use a book or level between your legs, simulating a saddle, and measure from the floor to the superior part of the book. That is your inseam in centimeters.

Step 2: apply the formula

Once you have the measurement, multiply that number by 0.66 to get the ideal frame size (in cm):

Frame size (cm) = Inseam (cm) × 0.66

Practical example

If your inseam measures 78 cm:

78 × 0.66 = 51.48

The recommended size would be a frame of approximately 51-52 cm, equivalent to a size S or M depending on the range of bicycles Specialized.

What if you are between two sizes?

If the calculation gives you an intermediate value, take your riding style into account: for greater comfort, choose the larger size; if you want a more aggressive and sporty ride, choose the smaller one.

How does the geometry of your bike influence gravel in size and comfort?

The bicycles gravel They can have different types of geometry, and this influences how the bike behaves, even if the size is the same.

On the one hand, there are the more sporty or aggressive geometries, designed for quick use on compact tracks or mixed routes: lower and stretched stance, ideal for speed, lightness and reactivity. Many riders choose a slightly smaller size on these bikes to gain maneuverability.

On the other hand, there are more comfortable or adventure geometries, designed for long routes, bikepacking and uneven terrain: a more upright and relaxed posture, which prioritizes stability and comfort. If you hesitate between two sizes, with this type of geometry you can opt for the larger one.

How Brand Affects Bike Size Gravel

Differences between Trek, Orbea, Specialized, Canyon and more

In the world of gravel, Frame geometry can vary quite a bit between brands. Even if two bicycles list the same size (for example, M), their behavior and fit may be different depending on the manufacturer. This is due to the design of the reach, stack and head tube angle.

For example, Canyon he usually designs bikes gravel with a more sporty and aggressive geometry, while Orbea focuses on the balance between comfort and performance. Specialized offers models such as Diverge, with specific geometry for vibration absorption. Trek looks for versatility in its models like the Checkpoint, and Giant It is characterized by offering an intermediate position adaptable to different uses.

These differences mean that, even if you have a clear size according to your measurements, it is advisable to check the exact model and consult with our specialists before choosing. A size M in Scott may feel different than an M in BMC.

Explore Gravel bicycles by brand

Focus Gravel Bikes Canyon Gravel Bikes Orbea Gravel Bikes BMC Gravel Bikes Scott Gravel Bikes Specialized Gravel Bikes Giant Gravel Bikes

Size guide for other brands

Sizes Trek Sizes Giant Sizes Cannondale Sizes Specialized Sizes Scott Sizes Orbea Sizes BMC

Sizes Berria Sizes Colnago Sizes Cube Sizes Felt Sizes BH Sizes Cervélo Sizes Lapierre

Sizes Canyon Sizes Mondraker Sizes Bianchi Sizes Merida

Frequently Asked Questions

Not exactly. Although they may seem similar, the geometry and use are different. A size M on a road bike does not always correspond to an M on a gravel or MTB. That’s why it’s important to consult the specific charts for each type of bike.

Yes. The shape and geometry of the frame (aero, endurance, compact, sloping, etc.) can make two bikes with the same “official” size feel very different. It’s always recommended to check the geometry and reach of the specific model you’re going to buy.

Relying only on height without measuring your inseam.
Choosing by intuition without consulting charts or formulas.
Settling for a size just because “it’s what’s available.”
Not considering the use: comfort and type of routes also matter.
Ignoring the possibility of adjusting components (stem, seatpost, etc.) if you’re between two sizes.