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.
Amount
From
To
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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
Dimensions of 18 Square Inches
How big on a side is 18 square inches?
The dimensions will vary depending on the shape. If the area is squared-shaped, then the length of each side will be:
about 4.2426 inches
or
about 0.35355 feet
Click here to calculate square footage based on dimensions.
Square Inches to Square Feet Conversions
results may be rounded
sq in sq ft
18.00 0.125
18.01 0.12507
18.02 0.12514
18.03 0.12521
18.04 0.12528
18.05 0.12535
18.06 0.12542
18.07 0.12549
18.08 0.12556
18.09 0.12563
18.10 0.12569
18.11 0.12576
18.12 0.12583
18.13 0.12590
18.14 0.12597
18.15 0.12604
18.16 0.12611
18.17 0.12618
18.18 0.12625
18.19 0.12632
18.20 0.12639
18.21 0.12646
18.22 0.12653
18.23 0.12660
18.24 0.12667
18.25 0.12674
18.26 0.12681
18.27 0.12688
18.28 0.12694
18.29 0.12701
18.30 0.12708
18.31 0.12715
18.32 0.12722
18.33 0.12729
sq in sq ft
18.34 0.12736
18.35 0.12743
18.36 0.1275
18.37 0.12757
18.38 0.12764
18.39 0.12771
18.40 0.12778
18.41 0.12785
18.42 0.12792
18.43 0.12799
18.44 0.12806
18.45 0.12813
18.46 0.12819
18.47 0.12826
18.48 0.12833
18.49 0.12840
18.50 0.12847
18.51 0.12854
18.52 0.12861
18.53 0.12868
18.54 0.12875
18.55 0.12882
18.56 0.12889
18.57 0.12896
18.58 0.12903
18.59 0.12910
18.60 0.12917
18.61 0.12924
18.62 0.12931
18.63 0.12938
18.64 0.12944
18.65 0.12951
18.66 0.12958
18.67 0.12965
sq in sq ft
18.68 0.12972
18.69 0.12979
18.70 0.12986
18.71 0.12993
18.72 0.13
18.73 0.13007
18.74 0.13014
18.75 0.13021
18.76 0.13028
18.77 0.13035
18.78 0.13042
18.79 0.13049
18.80 0.13056
18.81 0.13063
18.82 0.13069
18.83 0.13076
18.84 0.13083
18.85 0.13090
18.86 0.13097
18.87 0.13104
18.88 0.13111
18.89 0.13118
18.90 0.13125
18.91 0.13132
18.92 0.13139
18.93 0.13146
18.94 0.13153
18.95 0.13160
18.96 0.13167
18.97 0.13174
18.98 0.13181
18.99 0.13188
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