Graph Paper

Quarter-Inch Scale This is the most common graph paper for students. It is referred to as 1/4 inch, or 1/4", or quarter-inch scale. One box is one quarter-inch long.

Eighth-Inch Scale This is also known as 1/8 inch, or 1/8" paper. If you want to keep your floor plan in 1/4" scale, you can also use this size, just count every two boxes (instead of every one box). One box is one eighth-inch long.

Five Millimeter Scale This is the metric measurement that is useful for floor plans that need to be drafted in metric units. Since a millimeter is so small and hard to see, you can use five millimeters for your scale. One box is five millimeters long.