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CPM

CPM is cost per thousand impressions: spend divided by impressions, multiplied by 1,000.

Formula

CostImpressions× 1 000= CPM

Example
€10 ÷ 2,000 × 1,000 = €5 CPM

Illustrative calculation, not a client result or benchmark. Use comparable periods and consistent measurement definitions.

How it works

Specify the report's impression basis and distinguish CPM from viewable-impression measures.

Example

Example: €10 for 2,000 impressions gives a €5 CPM in an example.

Common mistakes

Low CPM does not prove attention or conversions.

How can you check this in practice?

CPM is cost ÷ impressions ×1000. €40 over 10,000 impressions is an illustrative €4. Check whether the model uses all or viewable impressions. Compare identical formats and scope rather than different reports with similar labels.

Distinctions and limitations

CPM measures impression cost; CPC click cost. An impression is not a unique person or guaranteed attention. One user can receive several impressions.

Official sources

Editorial responsibility: Biser Bozhinov · PPC Specialist

Updated: 05/11/2026

For a correction or question: office@z-consult.bg