Curtain Pole Overhang Calculator
Calculate the equal overhang of a curtain pole on each side of a window.
How to use Curtain Pole Overhang Calculator
1. Enter Pole Length, Window Width. Use the matching measurement or purchase unit. 2. Pole length and window width must be positive. A shorter pole produces an error; equal lengths give zero overhang. The measurements describe geometry. Pole suitability, bracket support, curtain weight and fixing requirements depend on the selected product. 3. Select Calculate or press Enter to see overhang per side. 4. Select Select Copy result to copy the answer, or Reset to clear the form.
Why use this tool?
Use this calculator to plan the dimensions of a curtain pole. The measurements describe geometry. Pole suitability, bracket support, curtain weight and fixing requirements depend on the selected product.
How the calculation works
Overhang per side = (pole length − window width) ÷ 2. Pole length and window width must be positive. A shorter pole produces an error; equal lengths give zero overhang. The measurements describe geometry. Pole suitability, bracket support, curtain weight and fixing requirements depend on the selected product. Counts and comparisons use exact entered decimals. Other dimensions display up to six decimal places, with scientific notation for smaller nonzero results. Input and result magnitudes are limited to 9,007,199,254,740,991. Currency uses the selected currency’s minor unit.
Example
Curtain Pole example: A 2 m pole centred on a 1.6 m window leaves 0.2 m overhang on each side.
Practical tip
Measure from one fixed reference and check the pole maker’s bracket and support instructions.
Frequently asked questions
What does this result include?
Pole length and window width must be positive. A shorter pole produces an error; equal lengths give zero overhang.
Does this choose the right installation or allowance?
The measurements describe geometry. Pole suitability, bracket support, curtain weight and fixing requirements depend on the selected product.
How should I interpret rounding and units?
Whole purchase counts round up and maximum fit counts round down using the entered decimals exactly. Other dimensions use up to six decimal places; smaller nonzero results use scientific notation. Currency rounds to its minor unit, with smaller positive costs labelled explicitly. Unit selectors describe the input unit; changing one does not convert entered values.