Spike's Calculators

Area and Perimeter

Half Square Triangle

Spike VM

A half-square triangle is a square cut in half along its diagonal length. Another term for a half-square triangle is an isosceles right triangle.
This calculator uses feet and or inches for measurements.

Half square (isosceles right) triangle = a triangle with two equal length sides and 90-45-45 degree angles.

Half Square Triangle

Half Square Triangle Area and Perimeter

Side Length ft in n
Decimal Precision


Hypotenuse ft
Area of the Square
Decimal Square Feet ft²
Square Feet ft² in²
Decimal Square Inches in²
Square Inches in²
Square Metres
Perimeter of the Square
Decimal Feet ft
Feet ft in
Decimal Inches in
Inches in
Metres m


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


  1. the length of the hypotenuse in feet
  2. the area of the half-square triangle 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 half-square triangle 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

h = √s²+s²
A = ss/2
where h is the length of the hypotenuse 
s the length of one of the legs
A  the area of the  half-square triangle

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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