Cannibalisation Calculator

About this calculator

Promo lift looks great until you net off cannibalised siblings.

What the Cannibalisation Calculator measures

The Cannibalisation Calculator gives you an instant, defensible answer for cannibalisation calculator. Finance KPIs translate operational activity into commercial outcomes the board cares about — growth, margin, cash, and return on investment. Use the result alongside the rest of your retail scorecard so trade-offs between sales, margin, stock, and labour stay visible.

How to use the result

Track this metric weekly at department level and monthly at store level. Compare to last year, to budget, and to peer stores. A single number in isolation rarely tells the full story — context (season, weather, promotions, competitor activity) matters. Pair this calculator with the Department Scorecard Generator to roll multiple KPIs into a single rating.

Supermarket and convenience examples

In grocery, this calculation is typically run on departments such as Produce, Bakery, Meat, Deli, Dairy, Grocery, Frozen, Beers Wines & Spirits, and Non-Food. Fresh departments need tighter targets than ambient because of waste and shrink exposure. Convenience formats with high labour-to-sales ratios use the same formula but with category-specific benchmarks.