Rectangle

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Calculate the area and perimeter of a rectangle. This calculator uses feet and or inches for measurements.

Rectangle = a four-sided shape with the opposite sides running parallel to each other and four 90° corners.

Rectangle

Rectangle Area and Perimeter

Length ft in n
d
Width ft in n
d
Decimal Precision

Results:

Length of Diagonal ft
Area of the Rectangle:
Decimal Square Feet ft²
Square Feet ft² in²
Decimal Square Inches in²
Square Inches in²
Square Metres
Perimeter of the Rectangle:
Decimal Feet ft
Feet ft in
Decimal Inches in
Inches in
Metres m

Calculation

  1. length in feet and or inches
  2. width in feet and or inches
  3. decimal precision, the number of digits after the decimal point

Results

  1. the length of the diagonal in decimal feet
  2. the area of the rectangle in decimal square feet
  3. area in square feet and inches
  4. the area in decimal square inches
  5. the area in square inches
  6. the area in square metres
  7. the perimeter of the rectangle in decimal feet
  8. the perimeter in lineal feet and inches
  9. the perimeter in decimal inches
  10. the perimeter in inches
  11. the perimeter in metres

Formula
A = ab
P = 2(a+b)
where A is the area of the rectangle
a is the length 
b the width
P the perimeter of the rectangle

Conversions
one square foot ( ft²) = 144 square inches (in²)
one square inch (in²) = 0.00694444444444443 square feet (ft²)
one square foot ( ft²) = 0.09290304 square metres (m²)
square inch (in²) = 0.00064516 square metres (m²)
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