Bangle size to mm
Bangle sizes used in the Gulf and India are written like 2-4, meaning 2 and 4/16 inches across.
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How to use it
- Enter bangle size.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Inner diameter (in) = 2 + second number ÷ 16, diameter (mm) = diameter (in) × 25.4, circumference = π × diameter.
Example
Inputs: Bangle size = 2-4. Result: Inner diameter: 57.15 mm; Inner circumference: 179.5 mm; Diameter in inches: 2.25 in.
Limits and caveats
- This is a common trade convention, not an international standard, and some shops round the millimeters.
- A bangle must slide over the knuckles, so the right size depends on hand width, not the wrist.
Questions about this tool
What is the diameter of a 2-4 bangle?
Its inner diameter is 2.25 in, which is 57.15 mm.
What does the second number mean?
It counts sixteenths of an inch above 2 inches; it is not a decimal.
How far apart are the sizes?
Each step, such as 2-4 to 2-6, adds 1/8 in, or 3.175 mm, of diameter.