Rhombus Calculator
Find a rhombus's area, perimeter, diagonals and angles from its side and height, or from its diagonals.
Change the values and press Calculate to work out your own figures.
From the side and height
Enter the side and height.
| Amount | Unit |
|---|---|
| 1.8580608 | m² |
| 18,580.608 | cm² |
| 20 | ft² |
| 2,880 | in² |
| 2.222222222 | yd² |
| 0.0004591368228 | acres |
Show the working
- A = a × h
- sin α = h ÷ a
- Area = 20 ft²
From the diagonals
Enter the diagonal p and diagonal q.
| Amount | Unit |
|---|---|
| 2.22967296 | m² |
| 22,296.7296 | cm² |
| 24 | ft² |
| 3,456 | in² |
| 2.666666667 | yd² |
| 0.0005509641874 | acres |
Show the working
- A = p × q ÷ 2
- side = ½√(p² + q²)
- Area = 24 ft²
How to use it
Enter the side and height. Enter the diagonal p and diagonal q.
Enter the measurements (decimals, fractions such as 3/4, or mixed numbers such as 1 1/2) and, if you like, their unit; the answer is then also given in other units. Show the working gives the formula.
Key facts
A = a h = p q ÷ 2; sin α = h ÷ a
Diagonals
A rhombus's diagonals cross at right angles and bisect each other, so the side is ½√(p² + q²).
Questions
What is the area of a rhombus with side 5 and height 4?
20.
With diagonals 6 and 8?
24, and the side is 5.
Formulas
A = a h = p q ÷ 2; sin α = h ÷ a
Sources
Limitations
- All measurements in one calculation use the same unit; the answer is also given in other units.
- Measurements up to 10¹⁵.