CPM, CTR and Conversion Rate Explained (With Benchmarks for 2026)

Every ad platform buries you in metrics, but three numbers run the show: CPM (what attention costs), CTR (whether your creative works), and conversion rate (whether your page works). Understand how they chain together and you can diagnose any underperforming campaign in minutes.

CPM — cost per 1,000 impressions

CPM = spend ÷ impressions × 1,000. Spend ₹4,000 for 80,000 impressions → ₹50 CPM. Indian Meta/Google display CPMs commonly run ₹30–150 depending on audience and season (they spike hard around Diwali and year-end). CPM is your raw material cost — calculate yours with the CPM calculator.

CTR — click-through rate

CTR = clicks ÷ impressions × 100. Search ads average 3–6% (high intent); social/display ads 0.5–1.5%. A CTR far below benchmark means the creative or targeting is off — the ad is being seen and ignored. Check yours with the CTR calculator.

Conversion rate — where money is made or lost

Conversions ÷ visitors × 100. E-commerce averages 1–3%; lead forms 5–15%. Great ads pointing at a slow, confusing landing page produce expensive clicks and nothing else. The conversion rate calculator gives you the number; your page speed and offer determine it.

Chaining them: cost per result

₹50 CPM × 1% CTR = ₹5 per click. ₹5 per click ÷ 2% conversion = ₹250 per sale. Now the diagnosis is mechanical: cost per result too high? Either CPM is expensive (fix targeting), CTR is weak (fix creative), or conversion is weak (fix the page). One lever at a time.

Close the loop with ROI

₹250 per sale is great for a ₹2,000-margin product and ruinous for a ₹200 one. Run final numbers through the ROI calculator and the break-even calculator before scaling spend — and tag every campaign with the UTM builder so you can trust the attribution you're optimizing against.