Area Calculator
Calculate the area of various shapes including rectangles, squares, circles, triangles, and more. Convert between different units of measurement.
Select the shape you want to calculate area for
Enter the length of the shape
Enter the width of the shape
Enter the radius of the circle
Enter the base length
Enter the height
Enter the base length
Enter the height
Enter the first base length
Enter the second base length
Enter the height
Area
Shape
Perimeter
Formula Used
Shape Analysis
Dimensions
Area (sq meters)
Area (sq feet)
Area (sq inches)
Important Assumptions
This calculator assumes perfect geometric shapes and uses standard mathematical formulas.
For irregular shapes, consider breaking them down into simpler geometric components. All measurements should use the same units.
Frequently Asked Questions
How do I calculate the area of a rectangle?
Area = Length × Width. Example: 10 × 5 = 50 square units.
What's the formula for circle area?
Circle area: A = π × r², where r is the radius.
How do I find the area of a triangle?
Triangle area: A = ½ × Base × Height (height perpendicular to base).
What units should I use for area calculations?
Use consistent units (m², ft², in², cm²).
Can I calculate area for irregular shapes?
Break the shape into rectangles/triangles/circles and sum their areas.
How accurate is this area calculator?
Uses standard formulas; accuracy depends on input precision.