96 square units
Area Calculator
Use this free area calculator to find square-unit area for rectangles, triangles, circles, trapezoids, and parallelograms with formula steps.
Formula steps Examples included Copy results Private history
A = length x width96 cm^2
- Length
- 12 cm
- Width
- 8 cm
Steps
- Choose rectangle mode.
- Use A = length x width.
- Substitute the entered measurements.
- The area is 96 cm^2.
How to use the area calculator
- Choose the shape: rectangle, triangle, circle, trapezoid, or parallelogram.
- Enter the required measurements for that shape.
- Press Calculate area to see the square-unit result and formula steps.
- Use examples, recent answers, or copy the result while comparing shapes.
Common uses
Find area for common 2D geometry shapes.
Compare rectangle, triangle, circle, trapezoid, and parallelogram measurements.
Check square-unit answers for homework or planning examples.
Copy area results and formula steps into notes.
Examples
30 square units
78.5398163397 square units
Frequently asked questions
Quick answers about formulas, units, valid measurements, examples, copying, and private in-browser history.
Which shapes are supported?
The Area Calculator supports rectangle, triangle, circle, trapezoid, and parallelogram modes.
What formula does triangle area use?
Triangle area uses A = base x height / 2. If you know three sides instead of base and height, use the Triangle Calculator.
What formula does circle area use?
Circle area uses A = pi r^2, where r is the radius.
What units should I enter?
Use the same length unit for every measurement. The result is reported in square units, such as cm^2 or ft^2.
Can this calculate volume?
No. This calculator is for flat 2D area. Use the Volume Calculator for cubic volume.
Is my area history private?
Yes. Recent area answers stay only in the current browser tab while you use the page. They are not sent to a server.