Area of a Kite Calculator

This calculator finds the area of a kite when the diagonal lengths are known.

The major diagonal forms a line of symmetry for the kite and bisects the minor diagonal.

1. Choose the major diagonal length and minor diagonal length of the kite: you can choose a whole number, decimal or fraction.
   • You can type a fraction by typing the numerator then '/' then the denominator.
   • You can type a mixed number by typing the whole-number part, then a space then the fraction part.
   • Examples: 2 1/2 (two and one-half); 3 4/5 (three and four-fifths); 7 1/3 (seven and one-third).
2. Choose your units of measurement (default is none)
3. Choose your desired accuracy (default is 2 decimal places)
4. Click the Find Area button
5. You will be shown the area as a decimal (and also a fraction if you typed the length as a fraction).

First let's look at the kite below.

Now we are going to cut the kite in half along the major diagonal.

Next we are going to put the half-kite inside a blue rectangle..

You can see the half-kite forms a triangle which takes up exactly half of the area of the blue rectangle it is inside.

So the full size kite, which has twice the area of the half-size kite, will take up the whole area of the blue rectangle which the half-size kite is inside.

So the area of the blue rectangle and the area of the whole kite are equal.

The blue rectangle has the length of the major diagonal (a) and the width of half of the minor diagonal (½ b).

To find the area of the blue rectangle, we multiply the adjacent sides together which gives us:

\[ Area = a \cdot {1 \over 2} b = {1 \over 2} ab \]

We have 2 worksheets to help you practice finding the area of different kites and darts.

The first sheet is slightly easier, and contains whole numbers and fractional values only.

The second sheet contains whole numbers and both fractional and decimal values.

We have a range of other area worksheets and support pages for a range of different 2d shapes.

We have a range of area and volume calculators to help you find the area and volumes of a range of different 2d and 3d shapes.

Each calculator page comes with worked examples, formulas and practice worksheets.

We have a wide range of free math calculators to help you.

Most of our calculators show you their working out so that you can see exactly what they have done to get the answer.

Our calculator hub page contains links to all of our calculators!

The Math Salamanders hope you enjoy using these free printable Math worksheets and all our other Math games and resources.

We welcome any comments about our site or worksheets on the Facebook comments box at the bottom of every page.