# FAQ: How To Tell Bike Frame Size?

## How do I determine bike frame size?

The frame size is usually measured as the distance between the top of the seat tube (where the seat clamp holds the seat post) and the center of the bottom bracket. Sometimes, the center or top of the top tube is chosen as the first point.

## How do you know frame size?

Approximate your frame size by wrapping your fingers around your wrist. If your thumb and index finger overlap, you likely have a small frame. If the two meet, your frame size is probably medium and you are large boned if they do not meet.

## What does a 26 inch bike mean?

And what does it mean when they say “26 inch”? A 26 inch mountain bike means that the wheels have an internal diameter of 26 inches. For example, a man who stands 5’8″ would be best suited for a 20-inch frame with 700c wheels or larger (700c refers to the diameter of the wheel).

## Can you change your frame size?

As it turns out, you can’t change your frame size, bone structure, or the places you store body fat or muscle. That being said, certain workouts, especially those that involve lifting heavy weights, can obviously have an impact on your muscle definition.

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## How do you know if you have a large frame?

You can take a rough measurement of frame size by wrapping your thumb and index finger around your wrist at the point where you would wear a wristwatch. If your thumb and index finger overlap, you have a small frame. If your thumb and index finger do not touch, you have a large frame.

## Does frame size matter for weight?

Most weight charts take into effect your frame size. Many weight charts have 10 pound increments in each frame size; small, medium, and large. That is a 30 pound swing for any given height, so if you look at the chart and say to yourself, “I’m big boned and should weight more than that”, well, maybe 10-15 pounds.

## Is an 18 inch frame big enough?

In very general terms, an 18-inch bicycle is best for someone just under six feet in height, but factors like inseam length and the differences between bike manufacturers can all influence the fit.

## Is 26 inch wheel bike for adults?

Most adult bikes have wheels measurements around 26 – 29 inches. Give an allowance of 1-3 inches between your inseam and the crossbar of the bike.