Parallelogram Calculator
Calculate area, perimeter, and diagonals of a parallelogram from base, side, height, and angle between sides.
How to Use Parallelogram Calculator
The Parallelogram Calculator computes area, perimeter, and both diagonals of a parallelogram. Enter the base length, side length, height (perpendicular distance between parallel sides), and the angle between the base and side. Area is calculated as base × height. Perimeter is 2(base + side). Diagonals use the law of cosines: d₁ = √(b² + a² + 2ab·cos θ) and d₂ = √(b² + a² - 2ab·cos θ). Essential for geometry homework, engineering calculations, architectural design, and any application involving parallelogram-shaped areas. All calculations run locally in your browser.
Step-by-Step Instructions
- Enter the base length of the parallelogram
- Enter the side length and height
- Enter the angle between base and side in degrees
- Click Calculate to see area, perimeter, and diagonals
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