What is the Average CPM? (Formula + Good Benchmark)

What is CPM?
CPM stands for “Cost per Mille,” where mille means 1,000 in Latin. It refers to the cost advertisers pay for 1,000 impressions of one single ad.
The formula is straightforward:
What is Considered as Bad CPM?
Controlling CPM is about making sure the ads are being delivered efficiently to the right audience, with the right creatives, and for the right campaign objective.
Here are the best practices that consistently help reduce CPM while improving overall performance:
1. Let Campaigns Gather Enough Data
Don’t pause ads randomly or judge performance too early. Running with just a few dollars in spend won’t give you meaningful averages. Allow each campaign at least $100 in spend before evaluating CPM, CPC, or CTR. Early fluctuations are normal, especially when Facebook or TikTok is still learning who to show your ads to.
2. Focus on Quality Scores
3. Match Objectives with CPM Expectations
Not all CPMs are equal. Awareness campaigns usually deliver the lowest CPMs (around $3–5), while conversion campaigns can easily average $20–30 or more. Instead of comparing across objectives, measure whether your CPM is efficient for that campaign’s goal.
4. Optimize Creatives and Copy
5. Use Breakdowns to Find Inefficiencies
Look deeper into placement, age, gender, and platform breakdowns. Often, certain segments deliver lower CPMs without hurting performance. For example, Stories may outperform Feed, or a broader age range may reduce costs while still converting. Use this data to duplicate and refine ad sets.
6. Use Automated Bidding (Test Carefully)
If your campaign is sold on a fixed CPM or estimated CPM, test automated bidding options like maximizing viewable impressions or duplicating line items with slightly higher bids (20–30%). These small tests help you find the sweet spot without overspending.
7. Remember: CPM Alone Isn’t the End Goal
Irene Le is the Content Manager at TrueProfit, specializing in crafting insightful, data-driven content to help eCommerce merchants scale profitably. With over 5 years of experience in content creation and growth strategy for the eCommerce industry, she is dedicated to producing high-value, actionable content that empowers merchants to make informed financial decisions.
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