Area calculator program (updated 2026!) for all geometric shapes.

Use our free online area calculator to find the size in square meters for all types of land, including irregular quadrilaterals, circles, and tile layouts. Accurate with universal formulas, it's easy to use and requires no app download.

Area Calculator This online tool helps you quickly and accurately find the area in square meters of various geometric shapes without needing a calculator or memorizing complex mathematical formulas. It supports calculations for land areas (irregular quadrilaterals), construction (triangles, trapezoids), and decorative purposes (circles, ellipses, hexagons), all in one place.

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Area Calculation Program (Complete Version)

Area Calculation Program (Full Option)

Result: = 0 sq m.

Why use Floorista's area calculator? (Updated 2026)

Even a small error in calculating the area can lead to budget overruns, including costs...Flooring materials Whether it's paint costs or labor costs, our new version of the program has been developed to address previous weaknesses with the following advantages:

  1. The most complete (Full Option): From originally having only 4 shapes, we've upgraded to... 16 shapes It covers everything from basic work to complex architectural projects.
  2. High Precision 100%: We use universal mathematical formulas for all types of calculations.
    • special! Add function ""Irregular quadrilateral (diagonal formula)"" For land surveying work requiring the utmost precision (unlike the general averaging formula which gives rise to errors).
    • Easy to use (User Friendly): There's a live image preview showing exactly where to measure the distance, eliminating the need to guess variables A, B, and C.

Supports over 16 geometric shapes.

This program categorizes shapes for easy searching as follows:

  • Triangle group: General triangles, equilateral triangles, right triangles (knowing the base and height).
  • Square group: Square, rectangle, trapezoid, parallelogram, kite/rhombus shape.
  • Land group/unequal sides: Irregular Quadrilateral using Diagonals
  • Group of circles/curves: Circle, ellipse, ring (donut), sector (pizza slice).
  • Regular polygon group: Pentagon, hexagon, octagon (for tiling and paving blocks)

Summary of Formulas for Calculating Area (Formula Cheat Sheet)

ShapeArea Calculation FormulaSuitable for the job.
squareSide × SideGeneral tiling
rectangleWidth × LengthRoom area, walls
General triangleUse Heron's Formula (√s(sa)(sb)(sc)).Leftover space in the corners of the room.
trapezoid½ × (positive result of parallel sides) × heightFlag-shaped land, ceiling
Kite-shaped quadrilateral½ × product of the diagonalsTile patterns, artwork.
circleπ × radius²Fish pond, garden area
ellipseπ × radius of major axis × radius of minor axisConference table, mirror
Regular hexagon(3√3 / 2) × side²Interlocking blocks, honeycomb tiles

Who should use this tool?

This square meter area calculator is suitable for:

  • HomeownerCalculate SPC vinyl tiles, Laminate flooring Or the wallpaper that needs to be used.
  • Contractors and techniciansFor material estimation purposes, such as: Number of bricks per square meterlightweight bricksbrick blockstileWallpaper, or house paint
  • Students: For studying and understanding the calculation of area
  • Anyone who wants precision: Whether it's a small project or a big plan, accurate calculations are important.

FAQ

How reliable are programs that calculate the area of irregular quadrilaterals?

100% reliable TP3T if you choose to use this mode. ""Irregular quadrilateral (diagonal formula)"" And the diagonal measurements were taken correctly, which is the same method used by land surveyors to calculate the area of a land title deed.

What are the units of calculation?

The program is set to input "meters" by default, and the result will be displayed in "square meters (sq.m.)," which is the international unit used for construction and real estate in Thailand.

How do I convert square meters to square wa?

The program is set to input "meters" by default, and the result will be displayed in "square meters (sq.m.)," which is the international unit used for construction and real estate in Thailand.

Once you have the area in square meters, you can use this tool to get a preliminary price estimate for flooring materials:

phone: 061-6950808
LINE ID: @floorista

note:

  • The actual product design and color may differ slightly from the illustration.
  • Prices may change. Please check with the store before ordering.
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