Area Calculator

  • Parallelogram Area Calculator
    Calculate the area of a parallelogram easily with base and height inputs. Get accurate results for your geometry problems and learn how to determine parallelogram area efficiently.
  • Square Meter Calculator
    Calculate area in square meters from length and width. Free square meter (m²) calculator with instant square feet conversion.
  • Isosceles Triangle Area Calculator
    Calculate the area of an isosceles triangle easily with base and height inputs. Get accurate results instantly for geometry problems and real-world applications.
  • Trapezoid Height Calculator
    Find the height of a trapezoid from its area and two parallel bases using h = 2A / (a + b). Free, instant, and accurate geometry calculator.
  • Polygon Area and Perimeter from Coordinate Points Calculator
    Compute the enclosed area and perimeter of any simple polygon from an ordered list of (x, y) coordinate vertices using the shoelace formula. Free and exact.
  • Kite Area Calculator
    Find a kite’s area using the two diagonal lengths. Enter diagonal 1 and diagonal 2 to get the area instantly, calculated with A = (d1 × d2) / 2.
  • Frustum Area Calculator
    Compute a truncated cone’s total surface area using top radius, bottom radius, and height. Enter dimensions to get the area instantly.
  • Surface Area of a Rectangle Calculator
    Calculate the surface area of a rectangle instantly. Enter length and width to get area (length × width) plus the perimeter. Free, fast and accurate.
  • Ball Surface Area Calculator
    Enter radius in cm, m, or in to calculate a ball’s surface area using S = 4πr². Get the result instantly in the chosen unit squared.
  • Cube Surface Area Calculator
    Enter a cube’s side length to instantly calculate its total surface area (A = 6s²). Quick help for geometry, homework, and simple planning.
  • Square Footage of a Circle Calculator
    Find the square footage (area in ft²) of a circle from its diameter or radius. Also shows circumference, square yards, and square meters.
  • Square Inches of a Circle Calculator
    Calculate the area of a circle in square inches from its radius or diameter using A = πr². Fast, accurate, and free circle area calculator.
  • Square Feet of a Triangle Calculator
    Calculate the area of a triangle in square feet from its base and height. Instantly converts to square yards and square meters too.
  • Quarter Circle Area Calculator
    Calculate the area of a quarter circle from its radius using A = πr²/4. Also returns the quarter arc length and full perimeter instantly.
  • Land Area Calculator
    Enter length and width in meters to get the total area in square meters. Ideal for rectangular plots, fields, or property planning.
  • Isosceles Trapezoid Area Calculator
    Calculate the area of an isosceles trapezoid from its two parallel bases and height using A = ((a + b) / 2) × h. Fast, free, and accurate.
  • Isosceles Trapezoid Calculator
    Calculate the area, leg length, and perimeter of an isosceles trapezoid from its two parallel bases and height. Fast, accurate geometry tool.
  • Irregular Trapezoid Area Calculator
    Find the area of a trapezoid (regular or irregular) from its two parallel sides a, b and height h using A = ((a+b)/2)·h. Fast and accurate.
  • Heptagon Calculator
    Calculate the area, perimeter, apothem and circumradius of a regular heptagon (7-sided polygon) from its side length. Fast, free and accurate.
  • Dodecagon Area Calculator
    Calculate the area of a regular dodecagon (12-sided polygon) instantly from its side length using Area = 3(2+√3)a². Also shows the perimeter.
  • Dodecagon Calculator
    Calculate the area, perimeter, apothem and circumradius of a regular dodecagon (12-sided polygon) from its side length instantly.
  • Regular Polygon Side and Perimeter from Area
    Find the side length and perimeter of a regular polygon from its area and number of sides. Free calculator using a = sqrt(4S·tan(pi/n)/n).
  • Elliptical Segment Area Calculator
    Compute the segment area, chord length and elliptic arc length of an ellipse between two polar angles, given the semi-axes a and b. Free geometry calculator.
  • Decagon Calculator
    Calculate the area, perimeter, apothem and circumradius of a regular decagon (10-sided polygon) from its side length, with formulas and a worked example.

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