Gallery Wall Frames Centred Layout Calculator
Calculate the equal side margins for gallery-wall frames when centring one item within an available width.
How to use Gallery Wall Frames Centred Layout Calculator
1. Enter Available Width, Item Width. Use the matching measurement or purchase unit. 2. This centres one item or a supplied complete group width. If the item is wider than the space, the tool explains that it does not fit. Widths describe the frames’ outer edges. The row model does not locate hanging hooks or allow for mixed frame widths and vertical offsets. 3. Select Calculate or press Enter to see side margin for centred item. 4. Select Select Copy result to copy the answer, or Reset to clear the form.
Why use this tool?
Use this calculator to plan a horizontal row of frames. Widths describe the frames’ outer edges. The row model does not locate hanging hooks or allow for mixed frame widths and vertical offsets.
How the calculation works
Side margin = (available width − item width) ÷ 2. This centres one item or a supplied complete group width. If the item is wider than the space, the tool explains that it does not fit. Widths describe the frames’ outer edges. The row model does not locate hanging hooks or allow for mixed frame widths and vertical offsets. 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
Gallery Wall Frames example: An available width of 120 cm and one item 40 cm wide leave a 40 cm margin on each side.
Practical tip
Use each frame’s full outer width. For mixed widths, add those widths first and plan the remaining gaps separately.
Frequently asked questions
What does this result include?
This centres one item or a supplied complete group width. If the item is wider than the space, the tool explains that it does not fit.
Does this choose the right installation or allowance?
Widths describe the frames’ outer edges. The row model does not locate hanging hooks or allow for mixed frame widths and vertical offsets.
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.