Ad math

CTR Calculator

The percentage of people who saw your ad and cared enough to click — the fastest read on whether creative is working.

CTR = clicks ÷ impressions × 100. An ad shown 20,000 times that earns 350 clicks has a 1.75% CTR — 17.5 clicks per 1,000 impressions. CTR is the market's vote on your creative and targeting, and it quietly sets your click price: on CPM-based auctions, effective CPC = CPM ÷ clicks per 1,000 impressions, so doubling CTR halves the cost of every visitor. A strong CTR with weak sales points the finger downstream at the landing page or offer. Enter clicks and impressions to get both numbers.

CTR Calculator — your numbers

Click-through rate

1.8%

Clicks per 1,000 impressions

17.50

Estimate only. Results reflect exactly the numbers you enter — verify against your own accounting before making pricing decisions.

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Worked examples

Strong social creative

Clicks 350
Impressions 20000
Click-through rate 1.8%
Clicks per 1,000 impressions 17.50

A 1.75% CTR — comfortably above the ~1% social prospecting norm.

Fatigued display ad

Clicks 90
Impressions 30000
Click-through rate 0.3%
Clicks per 1,000 impressions 3

A 0.3% CTR — creative this ignored is paying full price for stale attention.

Frequently asked questions

What is a good CTR for e-commerce ads?

Rough 2026 orientation: 0.9–1.6% for Meta prospecting feeds, 2–5% for non-brand Google search, 5–15% for branded search, 0.3–0.8% for Amazon Sponsored Products, and under 0.5% for display. Compare an ad against its own placement's norm and its own history — a falling CTR on a once-strong ad is the classic fatigue signal.

Does a higher CTR make my ads cheaper?

On auction platforms, yes, twice over. Mechanically, effective CPC = CPM ÷ clicks per 1,000 impressions, so more clicks from the same impressions directly cuts click cost. Platforms also reward expected engagement in ad rank — Google's Quality Score and Meta's quality rankings — discounting the auction price for ads people actually want to click.

My CTR is high but sales are low — what is wrong?

The ad is writing checks the landing page can't cash. Usual culprits: clickbait creative attracting curiosity instead of intent, a price revealed only after the click, slow mobile load, or a mismatch between the ad's promise and the page's offer. Track CTR alongside conversion rate — you are buying customers, not clicks.

Why did my CTR drop over time?

Creative fatigue is the default explanation: as frequency climbs, the same users see the same ad again and stop responding. Broadened targeting, new placements with weaker norms (Audience Network, display partners), and seasonal attention shifts also drag CTR. Check frequency first — past 3–4 on prospecting, refresh the creative rather than the bid.

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Part of the Advertising & ROAS collection.