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CPM / CPC / CTR Calculator
Enter your spend, impressions and clicks to get CPM, CPC, CTR and cost per conversion — or solve for any missing number.
Plan a budget
Know a target CPM or CPC? See what a budget buys.
Formulas: CPM = spend ÷ impressions × 1,000 · CPC = spend ÷ clicks · CTR = clicks ÷ impressions × 100 · CPA = spend ÷ conversions · conversion rate = conversions ÷ clicks × 100. Leave optional fields empty and their metrics are simply skipped.
About the CPM / CPC / CTR Calculator
The CPM, CPC and CTR Calculator turns your ad numbers into the metrics that matter: cost per thousand impressions, cost per click, click-through rate, and cost per acquisition and return when you add conversions and revenue. The budget planner shows how many impressions and clicks a budget buys at an expected CPM and CTR.
How to use the CPM / CPC / CTR Calculator
- Enter your total spend, impressions and clicks.
- Add conversions and revenue to see cost per acquisition and return.
- Read CPM, CPC, CTR and the other metrics.
- Use the budget planner to estimate results for a future budget.
Frequently asked questions
How is CPM calculated?
CPM = cost ÷ impressions × 1,000. It is the price of showing your ad a thousand times.
What is a good click-through rate?
It varies by platform: search ads often average 3–6%, while display and social ads are usually well under 1–2%.
What is the difference between CPC and CPA?
CPC is what you pay per click. CPA (cost per acquisition) is what you pay per conversion, such as a sale or sign-up, which is usually the more important number.