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Trapezoid Area Calculator
Calculate area and perimeter of a trapezoid using parallel bases and height
📚 Examples, Rules & Help
🔍How to Calculate Trapezoid Area
Enter Trapezoid Dimensions
Input the lengths of both parallel bases and the height (perpendicular distance between bases).
Apply Trapezoid Formula
The calculator uses Area = ½(b₁ + b₂) × h, where b₁ and b₂ are the parallel bases and h is the height.
Calculate Properties
Get area and perimeter with step-by-step calculations showing the formula application.
View Results
All calculations are shown with detailed explanations and proper units.
🎯Common Use Cases
Engineering & Construction
- Bridge support beam cross-section calculations
- Retaining wall design and material estimation
- Roof truss and rafter area calculations
- Foundation footing area calculations
Land & Agriculture
- Irregular lot and property area calculations
- Agricultural field area planning
- Irrigation system coverage calculations
- Landscaping and garden bed area planning
💡Calculator Tips & Best Practices
💡Parallel Bases Required
A trapezoid must have exactly two parallel sides. These are the bases used in the calculation.
📏Height vs Leg Length
Height is the perpendicular distance between bases, not the length of the slanted sides (legs).
⭐Special Cases
When bases are equal, you have a parallelogram. When bases and height are equal, it approaches a rectangle.