Counterclockwise by design: does turning left make people spend more?

Walk into almost any large supermarket and you are immediately pointed right, toward the fruit and vegetables, usually, or the bakery, somewhere with colour and aroma and the pleasant sensation of freshness. The rest of the store fans out from there in a route you did not consciously choose. By the time you reach the milk, which you almost certainly came for, you have traversed roughly the entire shop.

This is not an accident. It is a layout decision, and in most large grocery and department stores it routes you counterclockwise. The question worth asking, because people have argued about it for decades, is whether the direction actually matters.

The loop argument

The logic behind counterclockwise routing is not primarily about direction; it is about distance. A well-designed loop maximises the path between entry and the most frequently bought staples, which tends to mean routing shoppers along the perimeter and through as much floor space as possible before they reach what they came for. The counterclockwise direction is the most common implementation of this, but the loop itself is the mechanism.

Retail consultant Paco Underhill, in Why We Buy, documented what he called “the invariant right”, the tendency of shoppers, on entering a store, to turn right and then move counterclockwise.

Stores that align their layout with this natural drift can capture the pattern rather than fight it. In practice, large grocery stores in many markets are designed so that the counterclockwise route is the path of least resistance: wide aisles on the outside, clear sightlines, and the essentials reliably at the far end or the back.

What the evidence actually says

This is where the neat story gets more complicated. Research into counterclockwise layouts has produced real but modest findings, and they do not transfer cleanly across all store formats.

Academic work published on ResearchGate examining clockwise and counterclockwise orientations in discount stores found that layout direction influences shopper orientation and the number of zones visited, but the effects are sensitive to how clearly the route is signposted, the placement of key categories, and the shopper’s own familiarity with the store.

A habitual shopper ignores the designed path entirely; a first-time visitor follows it closely.

The dwell time link is on firmer ground. Research consistently finds that longer time in-store correlates with higher purchase likelihood, through a straightforward combination of greater product exposure and the well-documented tendency toward unplanned buying when people are already browsing. The counterclockwise loop is one tool for extending that time, but it is the time that drives in-store conversion, not the compass direction.

The IKEA exception, and what it reveals

The most-cited example of a loop layout is IKEA, which takes the principle to its logical extreme: a mandatory, one-way route through the entire showroom before you reach the marketplace, the warehouse, and the exit. Shoppers cannot take shortcuts without navigating to unsigned fire exits.

Professor Alan Penn of UCL’s Bartlett School of Architecture studied IKEA’s spatial logic and described the design as deliberately disorienting, leaving shoppers unsure of where the exits are and thereby exposing them to the full range.

IKEA’s own awareness of this shows in its in-store maps and the occasional shortcut doors scattered through the building, which exist partly to satisfy fire regulations and partly to prevent the level of frustration that turns a long dwell time into a negative experience.

The lesson from IKEA is not that a one-way loop always works. It is that the loop works when combined with a shopping experience compelling enough to make the route feel like discovery rather than imprisonment. IKEA has the product range and the price proposition to pull that off. Smaller retailers applying the same spatial logic without the same depth of offer risk creating a store that shoppers find irritating and avoid revisiting.

Direction, or design?

Strip the counterclockwise debate back to its foundations and the honest answer is: the direction of travel is less important than the quality of what shoppers see along the way.

A leftward loop past weak category signage and cluttered aisles will not outperform a rightward route that opens immediately onto a clear, well-merchandised perimeter. Sightlines, category placement, and the rhythm of the floor plan (where things narrow and open up, where natural decision points sit, where a shopper pauses involuntarily) are the variables that actually drive dwell time and conversion. The counterclockwise direction is, at best, a useful default when the rest of the design is well-executed.

The first wall shoppers encounter after the entrance decompression zone matters more than the turn direction. A retail chain’s branch-to-branch performance variation often comes down to how that first engaged sightline is used, not which way the loop runs.

Measuring your own loop

Here is the problem with applying any layout rule, counterclockwise included, without measuring: you do not actually know which way your shoppers move, which sections they cover, which ones they routinely skip, and whether the loop you designed is the loop they use.

Shoppers who know the store navigate it entirely differently from first-time visitors. High-footfall peak periods produce different path patterns from quiet weekday afternoons. Different entrances, if your store has more than one, create different initial orientations. None of this is captured by a rule of thumb about direction.

Wi-Fi-based people counting maps the real routes. Access points already installed across the floor pick up anonymous signals from shoppers’ phones, aggregated into path distributions that show which way visitors actually turn at the entrance, which zones they pass through, where they dwell, and where they don’t. The data you receive includes zone-level dwell times and entry path splits, so you can see whether the left-turn majority you assumed is actually a right-turn majority, or whether both directions exist in roughly equal measure and what matters is the first fixture in clear view.

You can then test. Move a key display. Change the entry sightline. Widen an aisle on one side of the loop. Run the measurement again. Whether the change produced more dwell time and more coverage of the floor is a question the data answers without guesswork.

The honest answer

Does counterclockwise routing increase spend? Sometimes, modestly, in certain formats, when executed alongside genuinely good layout design. Is it a universal rule? No. The direction of the loop is the least powerful variable in a system that also includes sightlines, category placement, aisle width, fixture height, and the quality of the in-store experience.

The stores that get this right are not the ones that picked the correct direction and assumed the rest would follow. They measured what their shoppers actually do (using anonymous, aggregate path data from Wi-Fi footfall analytics) and adjusted the layout around that reality. Counterclockwise may be where you start. It is not where you stop. And because the measurement is built on anonymous, aggregated statistics, the only footfall method in Europe approved by a data protection authority, no individual shopper’s route is ever on record.