Marketing calculators

CPM Calculator

Calculate campaign cost for every one thousand impressions. Your inputs stay in this browser.

Live calculator

Enter your numbers

This changes result formatting only. Keep every money input in the same currency.

Result

Cost per thousand impressions

$5.00

What this calculator measures

CPM normalizes campaign cost to one thousand recorded impressions, making differently sized awareness buys easier to compare.

Formula

CPM = Campaign Cost / Impressions x 1,000

Worked example

  1. 1A $500 campaign delivers 100,000 impressions.
  2. 2$500 / 100,000 x 1,000 = $5 CPM.

How to interpret the result

Compare like placements and audiences; low CPM alone says nothing about attention, clicks, or sales.

Common mistakes and limits

  • Entering reach instead of impressions, mixing currencies, or comparing viewable and served impressions.

Frequently asked questions

Why multiply by 1,000?

CPM is conventionally priced per thousand impressions.

Is lower CPM better?

Only when audience and impression quality are comparable.

Does CPM measure clicks?

No. Use CTR or CPC for click behavior.

Last reviewed: July 26, 2026

Published by Calculator Hub