Rectangle Area Calculator
Calculate the area of a rectangle by multiplying length times width. Perfect for calculating room area, flooring, walls, and rectangular land plots.
Area Calculator
Our free area calculator helps you find the area of any geometric shape. Calculate area for 2D shapes like triangles, circles, rectangles, squares, trapezoids, parallelograms, ellipses, and polygons. Also calculate surface area for 3D shapes. Perfect for students, teachers, construction, flooring, and land measurement.
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4.9
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Updated: April 2025
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AI Insights
AI
Rectangle
Formula
A = length × width
Area
50
m²
Perimeter
30
m
Calculation
Area = 10 × 5
= 50 m²
Conversions
cm²
500,000
ft²
538.2
in²
77,500
yd²
59.8
auto_awesome AI Analysis
Powered by ClaudeRectangle Area: 10m × 5m = 50 m²
- Area: 50 square meters
- Perimeter: 30 meters (2×10 + 2×5)
- Equivalent: ~538 sq ft or 0.005 hectares
Tip: This area could fit about 5 parking spaces or a small studio apartment.
lightbulb Tips
- •Rectangle: A = L × W
- •Circle: A = π × r²
- •Triangle: A = ½ × base × height
- •1 acre = 4,047 m² = 43,560 ft²
square_foot Formulas
Rectangle
L × W
Circle
π × r²
Triangle
½ × b × h
Trapezoid
½(b₁+b₂)×h
Ellipse
π × a × b
Conversions
1 m² = 10.764 ft²
1 acre = 4,047 m²
How to Use This Calculator
category
Select Shape
Choose the geometric shape you want to calculate.
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Enter Dimensions
Input the required measurements (length, width, radius, etc.).
square_foot
Choose Unit
Select the unit of measurement (meters, feet, etc.).
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View Results
See the calculated area, perimeter, and step-by-step solution.
The Formula
Each geometric shape has its own formula for calculating area based on its dimensions.
Area formulas vary by shape
lightbulb Variables Explained
- Rectangle A = length × width
- Square A = side²
- Triangle A = ½ × base × height
- Circle A = π × radius²
- Trapezoid A = ½ × (base₁ + base₂) × height
- Ellipse A = π × a × b
tips_and_updates Pro Tips
1
Always use the same unit for all dimensions
2
For irregular shapes, try breaking them into simpler shapes
3
Circle area uses radius, not diameter (radius = diameter ÷ 2)
4
Triangle area can also be calculated using Heron's formula if you know all sides
5
1 acre = 4,046.86 m² = 43,560 ft²
6
1 hectare = 10,000 m² = 2.471 acres
Area Calculator - Calculate Area of Any Shape
Calculate the area of any geometric shape instantly. Our free area calculator supports rectangles, squares, triangles, circles, trapezoids, ellipses, and more with detailed step-by-step formulas.
Triangle Area Calculator
Find the area of any triangle using base and height, or use Heron's formula when you know all three sides. Works for all triangle types.
Circle Area Calculator
Calculate circle area using the formula A = πr². Enter radius or diameter to find the area of circular spaces, pools, or round plots.
Land Area Calculator
Measure land area in square meters, acres, or hectares. Perfect for real estate, agriculture, and construction planning.
Room & Flooring Calculator
Calculate room area for flooring, carpeting, or painting. Works for rectangular rooms and can handle L-shaped spaces.
Step-by-Step Solutions
Learn how to calculate area with detailed explanations. Each calculation shows the formula and step-by-step solution.
Frequently Asked Questions
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Data sourced from trusted institutions
All formulas verified against official standards.