Are my floor plan measurements uploaded to external servers?

No! All area calculations execute 100% locally in your browser memory.

Calculators & Converters

Area Calculator

Calculate surface area for geometric shapes.

Math, Physics & Academic Studio

Quadratic Equation Solver (ax² + bx + c = 0)

COEFFICIENT A

COEFFICIENT B

CONSTANT C

FIRST ROOT (x₁)

3.0000

SECOND ROOT (x₂)

2.0000

About Area Calculator

The Universal 2D Surface Area Calculator computes planar surface areas for Circles, Triangles, Rectangles, Trapezoids, Ellipses ($A = \pi a b$), Parallelograms, Rhombuses, Sectors, and Complex Compound composite shapes with automatic unit conversion (sq ft, sq meters, acres, hectares).

Step-by-Step Guide

How to Use Area Calculator

Step 1

Select shape geometry from the catalog.

Step 2

Enter required dimensional parameters (radius, base, height, axes).

Step 3

Review computed surface area in primary and converted units.

Step 4

Click "Copy Area Value".

Industry Scenarios

Practical Use Cases for Area Calculator

Real Estate Land Acreage & Turf Grass Seeding

Calculate total lawn and lot acreage for sod ordering, fertilizer application rates, and property boundaries.

Interior Painting & Tile Floor Material Estimation

Combine multiple room wall and floor shapes, subtracting window and door cutouts to compute net square footage.

Sample Data & Transformation

Input & Output Examples

Calculating Ellipse with Semi-Axes a = 6m, b = 4m

Input Sample:

Shape: `Ellipse`, Semi-Major a: `6.0 m`, Semi-Minor b: `4.0 m`

Processed Result:

Area: `75.3982 m²` | Unit Equivalents: `811.58 sq ft` | `0.0186 acres` | `0.00754 hectares`

Technical Capabilities

Key Features & Performance

✓Shape Catalog: Square, Rectangle, Triangle, Circle, Sector, Ellipse, Trapezoid, Parallelogram, Rhombus, Regular Polygon ($N$-gon).
✓Compound Shape Mode: add and subtract multiple geometrical areas for complex floor plans.
✓Converts output units across: sq mm, sq cm, sq m, sq km, sq inches, sq feet, sq yards, acres, and hectares.
✓100% Client-Side memory execution.
✓1-Click Copy computed area in all unit formats.

Technical Glossary

Key Terminology & Definitions

Planar Area

The two-dimensional measure of the amount of space inside the boundary of a flat geometric surface.

Acre

An imperial unit of land area equal to 43,560 square feet (approx. 4,046.86 square meters or 0.4047 hectares).

Frequently Asked Questions (PAA)

Area Calculator FAQs

The area of an ellipse is $A = \pi \times a \times b$, where $a$ is the semi-major axis (half horizontal width) and $b$ is the semi-minor axis (half vertical height).