CPM Calculator
Calculate campaign cost, CPM (cost per 1,000 impressions), or total impressions from the other two ad metrics. Pick which one you're solving for, enter the other two, and get cost-per-impression, impressions-per-dollar, and a daily budget/impressions breakdown for your campaign length.
Input
Used for the daily impressions/budget breakdown below.
Output
| Metric | Value |
|---|---|
| No data yet | |
Guides
CPM (cost per mille, "mille" being Latin for thousand) is what you pay per 1,000 ad impressions. Any two of campaign cost, CPM, and total impressions determine the third — this calculator solves for whichever one you're missing.
How to use it
- Pick Solve For — Campaign Cost, CPM, or Impressions.
- Fill in the other two values.
- Set Campaign Length (days) if you want the daily breakdown scaled to your actual flight dates rather than a default month.
- The results update instantly: the solved value, plus cost-per-impression, impressions-per-dollar, and a daily impressions/budget split.
The formula
CPM ties the three numbers together as:
Campaign Cost = (CPM ÷ 1,000) × Impressions
CPM = (Campaign Cost ÷ Impressions) × 1,000
Impressions = (Campaign Cost ÷ CPM) × 1,000
What's a "good" CPM?
It depends entirely on the platform, audience, and ad format — display banners often run $2–$10 CPM, while premium video or LinkedIn placements can run well over $30. Use this calculator to compare quotes from different vendors on equal footing rather than to judge a number in isolation.
Why does the daily breakdown matter?
A $3,000 budget at a $5 CPM buys 600,000 impressions total — but whether that's 20,000 impressions a day or 85,000 depends entirely on whether the campaign runs 30 days or 7. Set Campaign Length to your real flight dates to see the daily pace you're actually buying.
How is this different from CPC or CTR?
CPM prices impressions (views), regardless of clicks. CPC (cost per click) prices actual clicks instead — use it when you're paying for traffic, not reach. CTR (click-through rate) measures what fraction of impressions turn into clicks, independent of price.
Tracking ROI on the same campaign? Use the ROI Calculator to weigh spend against return, or the Campaign URL Builder to tag the links you're driving those impressions to.
Privacy
All calculations run in your browser. Nothing you enter is sent to a server.
Use it from code
From 3 credits per callREST API
curl -X POST https://api.iotools.cloud/v1/tool/cpm-calculator \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"solveFor": "cost",
"campaignCost": "500",
"cpm": "5",
"impressions": "100000",
"campaignDays": "30"
}'Swap in your own key from your account. The tool's fields are the body — no wrapper.
Ask an AI agent
Use the IOTools `cpm-calculator` tool (CPM Calculator) on this input:
YOUR_INPUT_HEREPaste this at any agent connected to the IOTools MCP server, then add your input.