Guides · Audit type
Advertising Waste Calculator
A rough estimate is a starting point — an audit against your own data is the actual answer.
The problem with waste 'calculators'
Most advertising waste calculators online ask for your monthly spend and industry, then output a percentage pulled from an aggregate benchmark — useful for a rough sense of scale, useless for knowing what's actually happening in your account. A generic industry average doesn't know that your Performance Max campaign is bidding against your Search campaign, or that one ad group has been running the same creative for eight months.
Why aggregate estimates fall short
Waste percentages vary enormously by account maturity, category competitiveness, and how recently the account was last reviewed. A benchmark-based calculator has no visibility into any of that — it's a marketing tool for the calculator's owner, not a diagnostic for your account.
How to get a real number instead of an estimate
The only way to know your actual wasted spend is to measure it against your own data — search terms that spent without converting, duplicate auctions between your own campaigns, budget sitting in underperforming ad groups. That requires your exports, not a category average.
How AdStake calculates it
AdStake's waste detection module analyzes your uploaded search terms and campaign data directly, producing a dollar figure labeled as measured (summed directly from your data) or modeled (an estimate, clearly marked as such) — never a number pulled from an industry average and presented as yours.
Frequently asked questions
Can I get a waste estimate without uploading data?
Not a meaningful one. Any number that doesn't come from your account's actual search terms and spend data is a category-wide guess, not a measurement.
What data do I need for an accurate waste calculation?
A Google Ads search terms report and/or campaign export gives the most accurate result. Meta Ads campaign exports enable the same analysis on the paid social side.
Stop guessing. Get the evidence.
Upload the reports you already have and get an evidence-linked audit — from $149, no account connection required.
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