Spike's Calculators

Area and Perimeter

Right-Angled Triangle - Metric

Spike VM

Calculate the area and perimeter of an right-angled triangle.
This calculator uses metres for measurements.

Right-angled triangle = a triangle where one of the inside angles equals 90°.

Right-Angled Triangle

Right Angled Triangle Area and Perimeter - Metric

Length a m
Length b m
Decimal Precision


Diagonal c Length m
Area of the Right Angled Triangle
Square Metres
Square Feet ft²
Square Inches in²
Perimeter of the Right Angled Triangle
Metres m
Feet ft
Inches in


  1. length a in metres
  2. length b in metres
  3. decimal precision, the number of digits after the decimal point


  1. the length of the diagonal in metres
  2. the area of the right-angled triangle in square metres
  3. area in square feet
  4. the area in square inches
  5. the perimeter of the right-angled triangle in metres
  6. the perimeter in feet
  7. the perimeter in inches

A = ab/2
P = a+b+√a²+b²
where A is the area of the ellipse
a the length of a side
b the length of the other side
P the perimeter of the triangle

one metre (m) = 3.28083989501312 feet (ft)
one metre (m) = 39.3700787401575 inches (in)
one square metre (m²) = 10.7639104167097 square feet (ft²)
one square metre (m²) = 1550.0031000062 square inches (in²)
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