Free Ad Waste Calculator for Shopify Merchants

Estimate how much of your Shopify ad spend is being wasted — based on industry-specific benchmarks for creative fatigue, brand cannibalization, and channel overlap. Enter two numbers, get a diagnosis.

Shopify merchants spending $3,000+/month on Meta and Google Ads typically waste 20–35% of budget on brand cannibalization, creative fatigue, and channel overlap between Meta and Google attribution. This calculator applies industry-specific baselines (apparel, beauty, home goods, electronics, and a general default) to estimate your waste range across all three categories.

The result is a low-high band, not a point estimate — because every store is different. Your exact number depends on audience overlap, creative refresh cadence, and campaign structure.

How this calculator works

The calculator multiplies your total monthly ad spend (Meta + Google) by a waste-rate baseline specific to your industry. Each component uses a separate baseline:

Cannibalization baseline: 18–25% for apparel, 20–28% for beauty, 22–30% for home goods, 15–22% for electronics, 20–25% general.
Creative fatigue baseline: applied to total spend; 15–22% for categories with fast trend cycles (apparel, beauty), 10–18% for slower categories (home goods, electronics).
Channel overlap baseline: proportional to the smaller of your Meta vs Google spend — that's the boundary where double-counting can occur.

Results are shown as low-high bands (±30% variance) rather than point estimates so you can see the range of reasonable outcomes.

What the numbers mean for your store

If the calculator says you're wasting $2,000–$2,800 per month, that's $24,000–$33,600 per year of advertising budget producing no incremental revenue. For a store with 20% net margins, that's equivalent to $4,800–$6,720 of lost profit per year — enough to justify a paid audit many times over.

This calculator is directional. The only way to measure your real number is with incrementality experiments that hold out a portion of your audience and measure actual causal lift. That's what the paid Ripplux platform provides.

Try the specialised calculators

Want your exact numbers?

This calculator uses industry averages. Ripplux is in early access — reserve a founding spot to get your store’s exact numbers at launch. The first 15 members get lifetime Pro for $149, paid once.

Reserve your founding spot