Cost, impressions, CPM. Give any two, get the third.
CPM is cost per thousand impressions — the standard rate for display, video and social impression-based buys. Fill in any two of the three numbers below and this works out the one you're missing. No benchmark, no guesswork, just the arithmetic.
Your numbers
CPM = (Cost ÷ Impressions) × 1,000. Enter the two you know — total cost, number of impressions, or the CPM rate itself — and leave the third blank.
Fill in any two of the three fields below — the third gets calculated.
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What CPM actually measures
CPM stands for cost per mille — mille being Latin for thousand. It's the price of getting an ad in front of 1,000 impressions, regardless of clicks or engagement, which is why it's the standard currency for display, video pre-roll, connected TV and most social impression-based buys. A lower CPM isn't automatically better — it's only useful alongside how relevant or viewable those impressions actually were.
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