Tire pressure
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Rear
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Bike size calculator
Find your bike size.
Bike size, frame and saddle height. Free, no account needed.
An indicative estimate: compare it with the size chart for the model you want to buy.
Saddle height
inseam x 0.883cm
Not sure of your inseam?
- Stand barefoot with your back against a wall.
- Place a book between your legs, like a saddle.
- Measure from the floor to the top edge of the book.
Before you inflate
- Enter your weight and tire width.
- Choose the surface and, in the options, the tire setup.
- Always check tire and rim limits.
Not sure of your inseam?
- Stand barefoot with your back against a wall.
- Place a book between your legs, like a saddle.
- Measure from the floor to the top edge of the book.
Enter height and press Calculate to see size, frame and saddle height.
Your size. A starting point.
Size
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Frame
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Height
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Inseam
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Saddle
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Show calculation
Compare smaller and larger sizes
Smaller or larger size?
quick choiceSmaller size
Larger size
Choose well. Ride comfortably.
Practical guides for your next step.
Between two sizes?
Compare comfort, control and frame geometry.
Set your saddle height
Start with your inseam and refine your position.
Find your mountain bike size
Height, frame size and top tube clearance.
Calculate tire pressure
Weight, width and surface: a starting estimate.
Already considering a model?
Read stack and reach to compare its dimensions.
Measure your inseam correctly
Book, wall and tape measure: the steps to follow.
View size charts by bike type
Reference chart
| Size | Height (cm) | Inseam (cm) | Frame (cm) |
|---|---|---|---|
| XS | 140–152 | 68–73 | 46–49 |
| S | 153–162 | 73–77 | 49–52 |
| M | 163–170 | 77–82 | 52–55 |
| M/L | 171–178 | 82–86 | 55–58 |
| L | 179–186 | 86–90 | 58–61 |
| XL | 187–195 | 90–93 | 61–63 |
| XXL | 196+ | 93+ | 63+ |
| Size | Height (cm) | Inseam (cm) | Frame (cm) | Frame (") |
|---|---|---|---|---|
| XS | 140–154 | 66–72 | 33–37 | 13–14.5" |
| S | 155–164 | 72–76 | 37–41 | 14.5–16" |
| M | 165–174 | 76–81 | 41–44 | 16–17.5" |
| L | 175–184 | 81–86 | 44–48 | 17.5–19" |
| XL | 185–194 | 86–91 | 48–52 | 19–20.5" |
| XXL | 195+ | 91+ | 52+ | 20.5"+ |
| Size | Height (cm) | Inseam (cm) | Frame (cm) |
|---|---|---|---|
| XS | 140–152 | 68–72 | 42–45 |
| S | 153–162 | 72–76 | 46–49 |
| M | 163–172 | 76–81 | 50–53 |
| L | 173–182 | 81–86 | 54–57 |
| XL | 183–192 | 86–90 | 58–61 |
| XXL | 193+ | 90+ | 62+ |
| Size | Height (cm) | Inseam (cm) | Frame (cm) |
|---|---|---|---|
| XS | 145-157 | 68-74 | 46-49 |
| S | 158-167 | 74-79 | 49-52 |
| M | 168-177 | 79-84 | 52-55 |
| L | 178-187 | 84-89 | 55-58 |
| XL | 188-197 | 89-94 | 58-61 |
| XXL | 198+ | 94+ | 61+ |
| Size | Height (cm) | Inseam (cm) | Frame (cm) |
|---|---|---|---|
| XS | 145-157 | 68-74 | 43-46 |
| S | 158-167 | 74-79 | 46-49 |
| M | 168-177 | 79-84 | 49-53 |
| L | 178-187 | 84-89 | 53-57 |
| XL | 188-197 | 89-94 | 57-61 |
| XXL | 198+ | 94+ | 61+ |
| Wheel/size | Height (cm) | Inseam (cm) | Notes |
|---|---|---|---|
| 12" | 90-104 | 34-43 | first bike |
| 14" | 100-114 | 40-48 | 14" wheel |
| 16" | 110-124 | 45-53 | 16" wheel |
| 20" | 120-139 | 52-62 | 20" wheel |
| 24" | 135-154 | 60-70 | 24" wheel |
| 26"/XS | 150-164 | 68-76 | 26" or XS adult |
Frequently asked questions
Height or inseam?
Inseam is better for frame and saddle estimation. Height gives the general commercial size range.
What if I am between two sizes?
Smaller usually feels more agile, larger usually feels more stretched and stable. A real test ride still wins.
Does this work for every brand?
No. Geometry changes by brand and model. Compare the result with the official size chart.