The skeleton of an adult human is made up of 206 bones of many different shapes and sizes. Added together, your bones make up about 15% of your body weight. Newborn babies are actually born with many more bones than this (around 300), but many bones grow together, or fuse, as babies become older. Some bones are long and thick, like your thigh bones. Others are thin, flat, and wide, like your shoulder blades.

The human body has 206 bones.

There are approximately 206 bones in the average human adult skeleton, but it can vary based on the degree of fusion between various bones in the body.

There are 206 bones in an normal adult skeleton and about 300 in an infants.  The difference comes from the fact the some bones fuse over time into a single bone.  For example, an infants paired frontal, periatal, and occipital plates fuse to create single skull.