Kite Calculator
Find the area and perimeter of a kite from its two diagonals and side pairs.
About Kite Calculator
A kite has two pairs of adjacent equal sides and perpendicular diagonals. Its area is half the product of the diagonals.
Formulas
Area
A = (d₁ × d₂) / 2
- d₁
- Longer diagonal
- d₂
- Shorter diagonal
Perimeter
P = 2(a + b)
- a
- Shorter side pair
- b
- Longer side pair
Worked example
With the default values below, Kite Calculator returns Area of 40.0000. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Diagonal 1 (p)minimum 0 units
- 10 units
- Diagonal 2 (q)minimum 0 units
- 8 units
- Side a (shorter pair)minimum 0 units
- 5 units
- Side b (longer pair)minimum 0 units
- 7 units
Results
- Area
- 40.0000 sq units
- Perimeter
- 24.0000 units
Step by step
- 1Area from diagonals= 40
- 2Perimeter= 24
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
Is a rhombus a special kite?
Yes — a rhombus is a kite where both pairs of adjacent sides are equal (all four sides equal).
Are the diagonals of a kite always perpendicular?
Yes — the diagonals of a kite always intersect at right angles.