Spike's Calculators

Area and Perimeter

Diamond (Rhombus)

Spike VM

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

A diamond (rhombus) is a four-sided shape where all four sides are the same length, and the opposing angles are equal. If the angle is 90 degrees, it is a square.

The angle can not be more than 180° 

Diamond Area and Perimeter

Length of a Side ft in n
Angle in Degrees °
Decimal Precision


The Second Angle °
Area of the Diamond
Decimal Square Feet ft²
Square Feet ft² in²
Decimal Square Inches in²
Square Inches in²
Square Metres
Perimeter of the Diamond
Decimal Feet ft
Feet ft in
Decimal Inches in
Inches in
Metres m


  1. the length of a side in feet and or inches
  2. one of the angles in degrees
  3. decimal precision, the number of digits after the decimal point


  1. the second angle in degrees
  2. the area of the diamond 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 diamond 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

A = s²sin(a)
P = 4s
where A is the area of the diamond
s the length of a side
the larger angle converted to radians
P the perimeter of the diamond

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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