Convert 18 Square Inches to Square Feet
How big is 18 square inches? What is 18 square inches in square feet? 18 sq in to sq ft conversion.
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18 Square Inches =
0.125 Square Feet
exact result
Decimal places
Result in Plain English
18 square inches is equal to exactly 1⁄8 of a square foot.
To a Percentage
18 square inches = 12.5% of a square foot.
Result as a Fraction
18 square inches
= 1⁄8 square foot
= one eighth of a square foot
In Scientific Notation
18 square inches
= 1.8 x 101 square inches
= 1.25 x 10-1 square feet
Square Inches
A square inch is a unit of area. It is the size of a square that is one inch on a side. It is 1/144th of a square foot, or exactly 6.4516 square centimeters.Common abbreviations: sq in, inch², in², in^2
Square Feet
A square foot is a unit of area. It is the size of a square that is one foot on a side. It is 144 square inches, 1/9th of a square yard, or approximately 0.093 square meters.
Common abbreviations: sq ft, sf, ft², ft^2