Perimeter of a rhombus
Perimeter of a rhombus: enter the dimensions to calculate the result in the correct units.
Enter your values, then calculate.
Your calculation stays in your browser.
The formula, explained
4*ss : SideAn example to check
Using the starting values below, the calculation gives:
The length around the shape — The outline measures 20 cm. For edging, fencing or ribbon, this is a linear length.
Perimeter does not give the enclosed area. When planning a purchase, also check openings, joins and available lengths.
How to use this tool
Check the required inputs: side.
Choose the units and options that match your task. Calculate, check the result and use Copy or Print to keep a record. Rounding applies to the display; keep more precision in intermediate steps.
Can I use a decimal comma?
Yes. Numeric fields accept 12.5 or 12,5 and spaces for thousands, such as 1 234.50. Do not mix a point and comma in one number.
Where are my inputs processed?
Calculations run in your browser. Form values are not sent to Analytics. Copying, printing, sharing or opening an external service is your choice.
Method and interface checked on 2026-09-19 · Report an error