Bitmap storage

A bitmap image typically uses more storage for an image than a vector image does, because it’s storing each individual pixel.

Calculating the storage used by a bitmap image

If we ignore its metadata, then we can calculate the storaged (number of bits) used by a bitmap using:

\text{bits taken up}=\text{width}\times\text{height}\times\text{colour depth}

Or, if we know the resolution - the number of pixels:

\text{bits taken up}=\text{resolution}\times\text{colour depth}

Question	Answer
What is the formula for calculating the storage of a bitmap image (ignoring metadata) when width and height are known?	\text{bits taken up}=\text{width}\times\text{height}\times\text{colour depth}
How do you calculate the storage of a bitmap image when the number of pixels is known?	\text{bits taken up}=\text{resolution}\times\text{colour depth}
Why does a bitmap image typically use more storage than a vector image?	Because it is storing each individual pixel.