What is the formula for the area of a kite?

Area = (d1 × d2) / 2, where d1 and d2 are the lengths of the two diagonals. One diagonal of a kite bisects the other at a right angle, which is why this formula works.

Does it matter which diagonal I call d1 and d2?

No. Because multiplication is commutative, d1 × d2 equals d2 × d1, so you can assign the labels in either order and get the same area.

Is the kite area formula the same as the rhombus formula?

Yes. Both kites and rhombuses use A = (d1 × d2) / 2 because in both shapes the diagonals are perpendicular. A rhombus is a special kite where all four sides are equal.

What units does this calculator support?

You can use centimeters (cm), meters (m), millimeters (mm), inches (in), or feet (ft). Both diagonals must use the same unit. The area result is in the corresponding square unit.

What makes a quadrilateral a kite?

A kite has two pairs of consecutive sides that are equal in length. Its diagonals are perpendicular, and one diagonal bisects the other. This perpendicularity is the geometric reason the diagonal-based area formula works.

Can I use this calculator for a square or rhombus?

Yes. A square and a rhombus are both special cases of a kite (and also of each other). Enter their diagonals and the formula gives the correct area.

Area of a Kite Calculator

Name: Area of a Kite Calculator
Availability: InStock
Author: Nham Vu

Enter the two diagonals of a kite to instantly calculate its area using the formula A = (d1 × d2) / 2.

Enter Kite Diagonals

Diagonal 1 (d₁)

Diagonal 2 (d₂)

Unit

Area

—

Enter values and click Calculate

Kite diagram

Diagonals are perpendicular — one bisects the other

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Summary

Enter the two diagonals of a kite to instantly calculate its area using the formula A = (d1 × d2) / 2.

How it works

Enter the length of the first diagonal (d1) of the kite.
Enter the length of the second diagonal (d2) of the kite.
Select your preferred unit (cm, m, mm, in, or ft).
Click "Calculate Area" to see the result.
The step-by-step working is displayed below the result.
The interactive diagram updates labels to match your inputs.

Use cases

Solving geometry homework and exam problems involving kites.
Calculating the area of kite-shaped tiles, panels, or fabric cuts.
Architectural design with diamond or kite-shaped elements.
Verifying manual calculations for kite quadrilaterals.
Teaching the kite area formula with a visual diagram.
Engineering drawings that include kite-shaped cross-sections.
Crafting and quilting projects with kite-shaped pieces.
Sports and recreation — sizing kite frames and sail areas.

Frequently Asked Questions

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Last updated: 2026-05-23 · Reviewed by Nham Vu