Bitmap Graphics – File size calculations.

Calculate the following file sizes.

Remember

  • No of Pixels = (Length in inches X DPI) X (Height in inches X DPI)
  • File size = No of Pixels X Colour Depth
Colour Depth bits DPI Length (Inches) Height (Inches)
8 600 6 8
8 300 4 3
8 75 1 1
8 600 5 4
8 300 8 9
16 600 6 8
16 300 4 3
16 75 1 1
16 600 5 4
16 300 8 9
24 600 6 8
24 300 4 3
24 75 1 1
24 600 5 4
24 300 8 9