Interior Design Ideas

Getting the proportion right in interior design.

July 20, 2026

When we interior designers “shop” for specific pieces to furnish a room we usually start with one item which sets the tone. It could be a painting or a rug which gives color and motif direction. It could be an architectural feature such as a stone fireplace which gives textural and material (the stone) inspiration, or an unusual arch topped window which gives some geometry which might bear repeating in a piece of furniture. When an item is selected, like finding the first puzzle piece, then subsequent pieces have to work with it in a supporting role and fulfill each of their functions, such as seating, storage, work surface and lighting.

However, there is no substitute for getting the scale and proportion right. Looking at your furnishings 2 dimensionally on a floor plan will never replicate the 3 D environment in which case pieces fit between windows, and canopy beds form a room with in a room because of the visual space they occupy. To capture the ideal proportion, one which has proven over time to be culturally preferred, we should consider the “Golden Section”. Also coined “The Divine Proportion”, it is a 19th century name given to Euclid’s ratio where as the “whole line is to the greater segment, so is the greater to the less.” The Greeks called it phi, and it is 1.6180 or .6180.. to 1. Or to put it in terms in which we deal daily, as we dress ourselves, it is essentially the proportion of our body above the navel compared to the proportion from the navel down.

So back to your room. Think of the proportion of the coffee table to the length of the sofa, or the height of your artwork in relation to the table below it, as well as the overall ceiling height in the room. Try for the .6 to 1 ratio.

When placing accessories on a table, think in terms of an odd number of pieces and their various heights placed on a surface which you have subconsciously divided into thirds or 3/5 to 2/5.

Also consider the “bubble” of space around the piece (the negative space) as a proportion to the piece it’s self (the positive space).

In furniture design, clothing, art and architecture consider examples which are proportionately pleasing and see if the Golden Proportion is present in their design. Armed with this insight, perhaps it’s time to rearrange the furniture, or at least keep keep this idea in mind as you continue to decorate.

My background material for discussion about the “Golden Proportion” or “Divine Proportion” comes from, “Human Dimension and Interior Space”, by Julius Panero and Martin Zeinik, and the website milan.milanovic.org

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Posted in: Elements of Design, General