Area Calculator

  • Torus Area Calculator
    Calculate the surface area of a torus with this Torus Area Calculator. Input major radius (R) and minor radius (r) for accurate results. Explore the unique geometry of toroidal shapes.
  • Regular Polygon Area Calculator
    Calculate the area of a regular polygon with this free online tool. Input the number of sides and side length to quickly determine the polygon's area. Accurate results for any regular shape.
  • Regular Octagon Area Calculator
    Calculate the area of a regular octagon with precision using side length input. Quickly determine octagon areas for various geometric applications and design projects.
  • Square Yards Calculator
    Calculate area in square yards from length and width in feet. Free square yards calculator for flooring, carpet, and landscaping projects.
  • Circular Segment Area Calculator (from Chord Length and Height)
    Compute the area, central angle, arc length and radius of a circular segment from its chord length c and height (sagitta) h. Free, fast and precise.
  • Rectangle Area Calculator
    Enter length and width to calculate rectangle area and perimeter in seconds. View results and the Area = Length × Width formula to size projects.
  • Rhombus Area Calculator
    Calculate the area of a rhombus easily with this online tool. Input the lengths of two diagonals to instantly determine the rhombus area. Fast, accurate, and free!
  • Stair Carpet Calculator
    Calculate how much carpet runner you need for a staircase. Enter steps, tread depth, riser height and width to get length in feet and area in sq ft/yd.
  • Sector Area Calculator
    Calculate the area of a circular sector. Enter the radius and central angle in degrees to get the sector area instantly, using πr²θ/360.
  • Square Yard Calculator
    Calculate area in square yards from length and width in feet. Free square yard calculator for flooring, carpet, concrete, and landscaping projects.
  • Wallpaper Calculator
    Calculate how many rolls of wallpaper you need from your room perimeter, wall height and roll size. Free, fast and easy to use.
  • Circular Segment Area Calculator (from Radius and Height)
    Compute the area of a circular segment from radius r and segment height h (sagitta). Also returns central angle, arc length, and chord length.
  • Insulation Calculator
    Calculate how many bags of insulation you need. Enter room length, width, and coverage per bag to get total area and bags required, rounded up.
  • Wall Square Footage Calculator
    Calculate wall square footage by multiplying width by height and subtracting door and window openings. Get net paintable or coverable area in sq ft.
  • Carpet Calculator
    Calculate how much carpet you need in square feet and square yards, add a waste allowance, and estimate total carpet cost by room size.
  • Square Feet of a Rectangle Calculator
    Calculate the area in square feet of a rectangle from its length and width, with instant conversions to square yards and square meters.
  • Floor Area Ratio (FAR) Calculator
    Calculate Floor Area Ratio (FAR) instantly. Divide total building floor area by lot area to check zoning density limits for any project.
  • Scalene Triangle Area Calculator
    Find the area of a scalene triangle from its three sides using Heron's formula. Enter sides a, b and c to get area, perimeter and semi-perimeter instantly.
  • Flooring Calculator
    Calculate how many boxes of flooring you need. Enter room dimensions, coverage per box, and waste allowance to get area and box count instantly.
  • Paver Calculator
    Calculate how many pavers you need for a patio or walkway. Enter area and paver size, add a waste allowance, and get the exact paver count instantly.
  • Plywood Calculator
    Calculate how many plywood sheets you need for a wall, floor or roof. Enter surface size, sheet size and waste % for an instant material and cost estimate.
  • Right Trapezoid Area Calculator
    Calculate the area of a right trapezoid from its two parallel sides and height using Area = ((a+b)/2)·h. Fast, free, and accurate.
  • Right Trapezoid Calculator
    Calculate the area, slant leg, and perimeter of a right trapezoid from its two parallel sides and height. Free online geometry calculator.
  • Trapezoid Area Calculator
    Calculate the area of a trapezoid accurately with this trapezoid area calculator. Input top base length, bottom base length, and height for precise results. Simplify geometry calculations instantly.

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