Choosing the right skateboard size can feel confusing, especially if you are buying a deck for a child, a beginner or as a gift. This guide compares standard skateboard sizes in both inches and centimetres.
Standard skateboard size in cm: quick answer
Common adult skateboard deck widths are 8.0 to 8.25 inches, equal to 20.32 to 20.96 cm. Standard decks are roughly 31 to 32 inches long, equal to 78.74 to 81.28 cm.
Deck width is the main decision: 8.0 inches is a versatile beginner width, 8.125 inches balances agility and stability, and 8.25 inches provides a little more room and stability.
Buying for someone else? Our skateboard gift guide also covers age, use and design.
Why skateboard size matters
The size of a skateboard deck affects stability, control, comfort, and confidence. A deck that is too small can feel nervous and unstable. A deck that is too big can feel heavy and difficult to control, especially for kids and beginners.
The goal is not “the biggest” or “the most popular”. The goal is the right size for the skater.
The two key skateboard dimensions
1) Deck width (most important)
Measured in inches, this is the width of the deck. Width determines how stable the board feels, how much room you have for your feet, and how forgiving the deck is for beginners.
2) Deck length
Measured in inches, this is the total length from nose to tail. Length influences how compact or stretched the deck feels, which can matter for shorter or taller skaters.
In most cases: choose width first, then check length.
Deck width chart (with cm)
| Deck width | Width (cm) | Best for |
|---|---|---|
| 7.0" | 17.78 cm | Very young children |
| 7.5" | 19.05 cm | Kids (5–8 years) |
| 7.75" | 19.69 cm | Older kids / small teens |
| 8.0" | 20.32 cm | Teens & beginners (all-round) |
| 8.125" | 20.64 cm | Street and park (balanced) |
| 8.25" | 20.96 cm | Most adults (balanced + stable) |
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Which skateboard size should I choose
Kids
- Under 6 years: 7.0" – 7.25"
- 6–8 years: 7.5"
- 8–10 years: 7.75"
Smaller decks are lighter and easier to control, which helps kids build confidence.
Teens & beginners
- Safest all-round choice: 8.0"
- Stable enough to learn, still light and responsive
If you are unsure, 8.0" is almost always the right answer.
Adults
- Common adult choice: 8.25"
- More stability without feeling bulky
- Comfortable for cruising, park skating, and relaxed street riding
For larger feet, 8.25" provides more room and stability than narrower deck options.
Deck length explained (with cm)
| Deck length | Length (cm) | Typical use |
|---|---|---|
| 28" | 71.12 cm | Kids decks |
| 30" | 76.20 cm | Youth / transition |
| 31" | 78.74 cm | Adult standard |
| 31.75" | 80.65 cm | Adult / display |
For children, jumping straight from 28" to 31.75" is usually too big of a step. If you want a smoother transition, 30" is often the sweet spot.
7.75, 8.0, 8.125 and 8.25 inches in cm
- 7.75 inches = 19.69 cm
- 8.0 inches = 20.32 cm
- 8.125 inches = 20.64 cm
- 8.25 inches = 20.96 cm
- 1 inch = 2.54 cm
Small differences in width are noticeable underfoot. Use riding style, experience and personal comfort to choose between nearby sizes.
What if the deck is for display
If the skateboard is mainly meant as wall art, a keepsake, or a design object, then size becomes a visual choice rather than a functional one.
- Recommended display width: 8.25"
- Great wall-filling lengths: 31" – 31.75"
Common mistakes when choosing a skateboard size
- Choosing a board “to grow into” (often too big)
- Assuming bigger is always better
- Focusing on length instead of width
- Buying adult sizes for young children
A board that feels comfortable now helps progression more than a board that feels intimidating.
Our recommendation
If you want a simple rule:
- Kids: 7.5" – 7.75"
- Teens / beginners: 8.0"
- Adults: 8.25"
- Display decks: 8.25"
Still unsure? Choose the smaller option. Stability comes from confidence, not size.
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