Free CPM Calculator
Enter any two of spend, impressions, and CPM, and this calculator solves the third. Add engagements or clicks and it also returns cost per engagement, cost per click, and engagement rate, so you can price a creator campaign the same way you'd price paid media.
CPM
$6.25
Optional: add engagements and clicks to get cost per engagement and per click.
Cost per engagement
—
Cost per click
—
Engagement rate
—
How do you calculate CPM?
CPM is cost per one thousand impressions: divide your spend by impressions, then multiply by 1,000. A $2,500 campaign that delivered 400,000 impressions has a CPM of $6.25. Rearranged, impressions = spend ÷ CPM × 1,000, and spend = CPM × impressions ÷ 1,000.
Pick what you're solving for
Choose CPM, impressions, or spend. The other two become the inputs.
Enter your two known numbers
For creator campaigns, use the fee you paid the creator and the views their posts actually delivered.
Add engagements for the deeper read
Cost per engagement often separates two creators with identical CPMs — one bought you views, the other bought you attention.
A CPM tells you what a creator cost. Campaign Tracking tells you what they delivered: posts counted daily, pace per creator, and payouts on a ledger. See Campaign Tracking
Asked, answered, on the record.
CPM = (spend ÷ impressions) × 1,000. It expresses media cost per thousand views so campaigns of different sizes can be compared on the same scale.
This free tool is one arm of Octohog
The AI CMO workspace for UGC marketing: find and book creators on evidence, reverse-engineer winning videos, and watch your competitors daily.
Put eight arms on your next campaign.
Write your first brief and watch the bench come back ranked. Octohog handles the rest.
7-day free trial · set up in minutes · no agency retainer
