Google Ads Search Lost Impression Share Calculator
Turn Search Lost IS (Rank) and Search Lost IS (Budget) into lost clicks, lost conversions, and monthly revenue bleed, then see whether the fix is Ad Rank quality or budget reallocation.
Your search campaign data
You currently hold about 40% impression share of a total available market near 125,000 monthly impressions, at a click-through rate of 4.44%.
No credit card required.
What the lost share is costing you
Your 50,000 impressions plus the 75,000 you were eligible for but did not receive.
Modeled at your current 4.44% click-through rate applied to the missed impressions.
Lost clicks at a 4% conversion rate. At $150 each that is $20,000 of monthly value.
Additional monthly spend needed at $4.50 CPC. Chase it only while incremental conversions clear your target.
Diagnostic: budget constrained or Ad Rank constrained
Ad Rank is your primary constraint. 35% of the market is lost to rank versus 25% to budget, so quality inputs and competitiveness matter more than budget right now.
Fix Ad Rank loss without overbidding
- Tighten ad group themes so each keyword has an ad that visibly matches the query, which lifts expected CTR and ad relevance before any bid change.
- Run three genuinely distinct RSAs per active ad group with under 60% headline overlap so the auction has stronger assets to choose from.
- Fill every extension slot: sitelinks, callouts, structured snippets, images, and lead forms all feed the expected impact component of Ad Rank.
- Fix landing page experience: match the page headline to the query, cut load time, and keep the primary action above the fold on mobile.
- Only then adjust Smart Bidding targets, and cap the shift at about 20% per cycle so the campaign does not re-enter learning.
Fix budget loss with shared budgets and intraday pacing
- Move budget-constrained campaigns into a shared budget with campaigns that consistently underspend, so eligible demand is funded automatically.
- Pace intraday. If the daily budget is exhausted before your best converting hours, you are paying for the cheapest traffic of the day.
- Add negatives for wasted search terms first. Freed spend is the cheapest impression share you will ever buy.
- Raise daily budgets only on campaigns already hitting target CPA or ROAS, and verify Lost IS (Budget) falls before raising again.
- Never raise bids to solve budget loss. Higher CPCs simply deplete the capped budget faster.
Read the in-depth tactical guide: How to Fix Google Ads Search Lost Impression Share (Rank vs Budget)
Read the guideCommon questions
It is the share of the impressions your search ads were eligible for but did not receive, split by cause. Search Lost IS (Budget) is the portion missed because your daily budget ran out. Search Lost IS (Rank) is the portion missed because your Ad Rank was too low to enter or win the auction. Together with your actual impression share they sum to 100% of the total available market.
See your real Lost IS split in 60 seconds
PPC Tuner reads your live impression share by campaign, separates rank loss from budget loss, and stages the exact quality, negative, and budget changes that recover it. Nothing publishes until you approve it.