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How to Calculate CPM

What is CPM?

CPM (Cost Per Mille) is the cost to show an ad 1,000 times. The standard pricing metric for display, video, and brand awareness advertising campaigns.

Formula

CPM = (Total spend / Impressions) × 1,000
CPM
cheaper reach for the same audience — cheaper reach for the same audience

Step-by-Step Guide

  1. 1CPM = (Total spend / Impressions) × 1,000
  2. 2Total cost = (Impressions / 1,000) × CPM
  3. 3Impressions = (Spend / CPM) × 1,000
  4. 4Lower CPM = cheaper reach for the same audience

Worked Examples

Input
Spend $2,000, 400,000 impressions
Result
CPM = ($2,000 / 400,000) × 1,000 = $5.00

Frequently Asked Questions

What is Cpm?

CPM (Cost Per Mille) is the cost to show an ad 1,000 times. The standard pricing metric for display, video, and brand awareness advertising campaigns

How accurate is the Cpm calculator?

The calculator uses the standard published formula for cpm. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Cpm calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Cpm calculator use?

The core formula is: CPM = (Total spend / Impressions) × 1,000. Each step in the calculation is shown so you can verify the result manually.

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