Geometry Basics
Use simple shape, area, volume, triangle, pitch, and layout calculators for everyday measuring, planning, and project math.
9 calculators
Pick the calculator closest to the decision you are trying to make.
Square Footage
Calculate square footage or square meters from length and width, with optional waste allowance.
Open calculator → Geometry BasicsRectangle Area
Find the area of a rectangle from length and width, with imperial and metric support.
Open calculator → Geometry BasicsTriangle Area
Calculate triangle area from base and height, with imperial and metric units.
Open calculator → Geometry BasicsRight Triangle
Calculate hypotenuse, area, perimeter, and angles from the two legs of a right triangle.
Open calculator → Geometry BasicsPythagorean Theorem
Find the diagonal side of a right triangle from two square sides.
Open calculator → Geometry BasicsCircle Area
Calculate circle area, circumference, and diameter from radius.
Open calculator → Geometry BasicsTrapezoid Area
Calculate trapezoid area from the two parallel bases and height.
Open calculator → Geometry BasicsCylinder Volume
Calculate cylinder volume from radius and height, with cubic feet, cubic meters, gallons, and liters.
Open calculator → Geometry BasicsRoof Pitch
Calculate roof pitch, slope angle, and slope factor from rise and run.
Open calculator →