CPC, CPA, CTR and Conversion Rate Calculator for Ads
Free tool · Updated October 2, 2026 · By CouponTalk · Reviewed by CouponTalk Expert Reviews on
Your result
Enter your measurements to see your result.
Quick answer
From four numbers you get every key ad metric. With 50,000 impressions, 900 clicks, ₹5,400 spend and 45 orders worth ₹27,000: CTR is 1.8%, CPC ₹6, conversion rate 5%, cost per order ₹120 and ROAS 5. Fix the weakest number first: low CTR means poor images or titles; low conversion means price or listing issues.
How to use this calculator
- Export one campaign's numbers for a fixed date range.
- Enter impressions, clicks, spend, orders and revenue.
- Compare the results with your break-even cost per order.
Formula
CTR = clicks ÷ impressions × 100; CPC = spend ÷ clicks
Conversion rate = orders ÷ clicks × 100; CPA = spend ÷ orders
ROAS = revenue ÷ spend
Benchmarks vary by category and season. Compare a campaign with its own past results.
Frequently asked questions
What is a good CTR on Amazon ads?
Around 0.3–0.5% is common for sponsored products; above 0.5% suggests strong images and titles. It varies by category.
What is CPA?
Cost per acquisition: ad spend divided by orders. Keep it below your profit per order before ads.
Why are my clicks high but orders low?
Check price, reviews, delivery date and images against competitors on the same search.
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