Parallelogram Area Calculator
Calculate the area of a parallelogram
Area
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Parallelogram Area Calculator Formula
Area of a parallelogram:
A = base × height
How to Use This Calculator
- Enter the base length of the parallelogram.
- Enter the perpendicular height — the distance between the two parallel bases, not the slant side length.
- Click Calculate Area to see the result.
Frequently Asked Questions
What is a parallelogram?
A parallelogram is a quadrilateral with two pairs of parallel sides. Rectangles and rhombuses are special cases of parallelograms. The area formula — base times perpendicular height — is the same as for a rectangle.
What is the difference between perpendicular height and slant height?
The perpendicular height is the shortest distance between the two parallel bases — measured at a right angle to the base. The slant side (the diagonal edge of the parallelogram) is longer. This calculator requires the perpendicular height.
What units are used?
This calculator is unit-agnostic. The result is in the square of whatever unit you use for base and height.
Can I calculate the area using the side lengths and an angle?
Yes. An alternative formula is A = a × b × sin(θ), where a and b are adjacent sides and θ is the angle between them. This calculator uses the base × height method, which is simpler when you know the perpendicular height.
What is the perimeter of a parallelogram?
The perimeter is P = 2(a + b), where a and b are the lengths of the two pairs of parallel sides. Unlike area, the perimeter does not depend on the height or angle of the parallelogram.
Can I share my calculation?
Yes. After clicking Calculate, the URL updates with your input values. Copy and share the URL to let anyone else see the same pre-filled form and result.