Geometry
Area, perimeter, volume, Pythagoras
Circle Calculator (area, circumference)
From the radius, get a circle's diameter, circumference and area.
Rectangle Calculator (area, perimeter)
From length and width, get a rectangle's area, perimeter and diagonal.
Triangle Area Calculator
Find a triangle's area from its base and height.
Pythagorean Theorem Calculator (hypotenuse)
Find the hypotenuse of a right triangle from its two legs.
Cylinder Volume Calculator
Find the volume and surface area of a cylinder from its radius and height.
Sphere Volume Calculator
Find the volume and surface area of a sphere from its radius.