# Readers ask: What Size Person Will An 18 Inch Bike Fram Fit?

## How do I know what bike frame size I need?

How to calculate a bike size? Measure your inseam!

1. Stand close to a wall, your feet should be 6-8″ (15-20 cm) apart.
2. Place a large, hardcover book between your legs – it will simulate the saddle.
3. Mark where the book’s spine touches the wall.
4. Measure the distance from that point to the floor – that’s your inseam.

## How do I determine bike frame size?

Adult bikes are measured by their frame size. Most manufacturers now measure the frame from the centre of the crank axle, to the top of the seat tube. Most road bikes are measured in centimetres (cm), whereas mountain bikes are generally measured using inches (in).

## What age does a 20 inch bike fit?

When do we go up to 20”? It is hard to put an age on when your child should move up to a 20” but an approximate gauge would be between 7 and 10 years old. Height is really the major factor in this, your child could fit on a 20” at five-years-old or they could be around eight or nine.

## Is there an 18 inch bike?

Bike Sizing Kids bikes come in these different sizes which are based on the wheel size of the bike: 12 inch, 14 inch, 16 inch, 18 inch, 20 inch, 24 inch, and now even 26 inch. The most common sizes are: 12 inch, 14 inch, 16 inch, 20 inch, and 24 inch.

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## Is a 19 frame a large?

Generally 19″ is the equivalent of a Large frame, and will fit someone around 6 feet tall.

## Is it better to get a bigger or smaller mountain bike frame?

If your arm span is longer than your height, go for a bigger frame. If it’s shorter, get the smaller one. On a bigger bike, the reach to the handlebars will be longer. If you have proportionally longer arms, you are likely to feel more comfortable on a bigger frame.

## Is a 29 inch bike too big?

A 29er is often taller than a comparably sized 26-inch wheel mountain bike and may be too tall for smaller riders. If you are under 5’6” tall, a 26-inch mountain bike is still likely to be a better fit. If you’re 5’6′ or taller, you should be able to find a 29er model to fit you.