Free ad efficiency tool
Estimate the budget sitting in below-average Meta and Google ad sets and the revenue gap to your own winners. No account connection, email or signup required.
What the result means
The calculator is a scenario, not an industry benchmark. It assumes 20% of spend is below average and asks what changes if that budget reaches the ROAS already achieved by your best ad sets. If your target is not above blended ROAS, it returns no uplift instead of inventing one.
What a real audit checks next
Glimmio reads campaign, ad-set, creative, search-term and tracking data to identify the specific source of inefficient spend. Findings include the evidence and proposed action; manual approval is the default, with optional bounded automation only when an account owner enables it.
Frequently asked questions
How does the ad spend waste calculator work?
It labels 20% of monthly spend as an explicit, conservative at-risk assumption, then multiplies that amount by the gap between blended ROAS and the ROAS of your own best ad sets. The result is an estimate, not a forecast.
Does the calculator upload my advertising data?
No. The three values stay in your browser. The calculator does not connect to Meta Ads, Google Ads or Shopify and does not send the values to Glimmio.
Is 20% wasted spend a benchmark?
No. It is a visible scenario assumption used to make the arithmetic testable. A connected read-only audit replaces it with findings from the actual account, broken down by campaign and ad set.