Use this octagon area calculator to calculate octagon area by entering the side length. Apply the regular octagon area formula for precise results.
a = side length
Multiply the square of the side length by 2(1+√2) to calculate the area of a regular octagon.
| a | Area |
|---|---|
| 2 | 19.313708 |
| 3 | 43.455844 |
| 4 | 77.254834 |
| 5 | 120.710678 |
| 6 | 173.823464 |
1. Take the side length (a).
2. Square the side length.
3. Multiply by 2(1 + √2) to find the area.
This octagon area calculator automatically computes the area using the regular octagon area formula with up to six decimal places.
• Regular octagons have eight equal sides and angles.
• Octagons are used in stop signs and tiling patterns.
• The area formula includes √2 for accuracy.
• Octagonal shapes are found in architecture and design.
• Octagons efficiently tile certain surfaces without gaps.