Octagon Area Calculator
Calculate the area of a regular octagon with ease.
Calculator
Enter Octagon Dimensions
Table of Contents
Concept
What is an Octagon?
A regular octagon is an eight-sided polygon where all sides are equal in length and all angles are equal. It's a common shape used in architecture, design, and various engineering applications. The octagon is known for its symmetry and aesthetic appeal.
Formulas
Formulas
Area
A = 2(1 + √2) × s²
where s is the side length
Steps
How to Calculate
Area Calculation
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1Measure the side length of the octagon
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2Square the side length (multiply it by itself)
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3Multiply by 2(1 + √2) (approximately 4.828)
Examples
Practical Examples
Example
A regular octagon has a side length of 5 units.
Area = 2(1 + √2) × s²
Area = 2(1 + √2) × 5²
Area = 2(1 + √2) × 25
Area ≈ 120.71 square units
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