Answer Page

Cost Per Thousand Impressions Example

Cost per thousand impressions (CPM) is a permille-style metric used in advertising.

QuestionHow do I calculate cost per thousand impressions?

Interactive CPM Calculator

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Cost

Impressions

CPM

Worked Steps

  1. Campaign cost: $480
  2. Impressions: 120,000
  3. CPM = (480 / 120,000) * 1000 = $4.00

FAQ

  • Is a lower CPM always better?
    Not always. Low CPM without conversion quality can still perform poorly.

Practical Context

How this exact question appears in real work and what the result helps you decide.

Example 1: Campaign Planning

Who Asks This Question?

Media buyers ask this when they need to benchmark channel costs before launching or reallocating ad spend. For this exact query: How do I calculate cost per thousand impressions?

What This Answer Tells You

The CPM result shows the price paid for audience reach, which helps compare channels and set bid limits. For this case: Use CPM = (cost / impressions) * 1000.

Example 2: Post-Campaign Review

Who Asks This Question?

Marketing analysts ask this when validating whether delivered impressions matched cost expectations. For this exact query: How do I calculate cost per thousand impressions?

What This Answer Tells You

The answer turns raw spend and impressions into a normalized metric for performance review and reporting. For this case: Use CPM = (cost / impressions) * 1000.