CPM Calculator - Cost per Thousand Impressions

Spend is the numerator. Delivered impressions, including repeat exposures under your reporting definition, are the denominator.

Formula: spend / impressions × 1000

Worked example

250 / 50000 * 1000 = 5

Assumptions and limits

• Inputs are user supplied. Use one currency and the same period for all inputs.
• Impressions may include repeat exposures or invalid traffic under your reporting definition. Match currency, reporting period and attribution scope; this calculator does not verify source analytics.

Inputs remain on this page. Display rounds to four decimal places; formulas use unrounded values.