How do I use the Trapezoid Area Calculator?
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Trapezoid Area Calculator
Calculate trapezoid area using both bases and height. Enter your values, review the formula, and use the worked result as a quick check for everyday planning.
Trapezoid Area Calculator
Calculate trapezoid area using both bases and height.
e.g., cm, m, ft, in
e.g., cm, m, ft, in
e.g., cm, m, ft, in
Results
Area
45 sq units
Formula: Area = ((base1 + base2) * height) / 2
Trapezoid Area Calculator
Calculate the area of a trapezoid (trapezium) using both parallel bases and the perpendicular height between them. Used for land plots, roof sections, and irregular-shaped areas.
Formula
Area = ((Base1 + Base2) × Height) ÷ 2. Average the two bases, then multiply by height. Base1 and Base2 are the parallel sides; height is the perpendicular distance between them.
Worked example
Base1 = 7, Base2 = 11, height = 5: area = ((7 + 11) × 5) ÷ 2 = 45 sq units.
Practical guidance
Identifying the parallel sides
In a trapezoid, two sides are parallel. These are the bases. The other two sides may be any length and angle. Measure the perpendicular distance between the parallel sides for the height.
Trapezoid area in real life
Land parcels, roof cross-sections, swimming pools with sloped bottoms, and some furniture designs use trapezoidal shapes. The average-of-bases approach gives the correct area regardless of how different the two bases are.
Frequently asked questions
What formula does this calculator use?
Area = ((base1 + base2) * height) / 2
Can I use decimal values?
Yes. Decimal inputs are supported for most calculators. Integer-based tools use rounded integer values where appropriate.
Is this calculator free?
Yes. CalcuNimble calculators are free and optimized for fast everyday use.