Find the Area of a Shape Calculator
Ultimate online square feet calculator to find the area of a shape. Master equations for area of shapes, use our polygon area calculator, land area calculator, area of irregular figures calculator, and area and perimeter calculator.
Rectangular Surface Area Calculator & Area Square Calculator
Calculate rectangular area calculation, sq area calculator, and area calculator with feet and inches.
Geometric Area & Formulas Guide
What is the formula to find area for standard shapes?
Common equations for area of shapes and the primary formula to find area:
• Rectangle: $\text{Area} = \text{Length} \times \text{Width}$
• Triangle: $\text{Area} = 0.5 \times \text{Base} \times \text{Height}$
• Circle: $\text{Area} = \pi \times r^2$
• Trapezoid: $\text{Area} = 0.5 \times (a + b) \times h$
How do i work out the area of a shape with irregular borders?
When asking how do you determine the area of a shape or how to figure out the area of a shape: split the irregular figure into simpler non-overlapping composite shapes (such as squares, rectangles, and triangles). Calculate the square footage of each section individually and sum them up using our area of compound figures calculator.
How to calculate the area of an object and land parcels?
To use our land area calculator and maps area calculator: measure the lot's boundary edges in feet. Multiply length by width to obtain square feet, then divide by $43,560$ to convert directly to acres, or divide by $107,639$ to convert to hectares.
How to find the total area of a shape with feet and inches?
When using an area calculator with feet and inches: convert the inches to decimal feet first (inches divided by 12). For example, $10\text{ ft } 6\text{ in}$ equals $10 + 6/12 = 10.5\text{ ft}$. Then multiply by the width in feet to get accurate square footage.