CPM Calculator
Compute CPM (cost per 1,000 impressions), Impressions or Budget.
$
Total spend for this campaign / flight.
Total ad views served (not necessarily unique users).
USD
How much you pay for each 1,000 impressions.
Result
CPM
Value
-
Provide two inputs to calculate the third.
What is CPM?
CPM stands for Cost Per Mille (1,000 impressions). It’s a pricing and performance metric widely used in display, video, DOOH, and programmatic advertising. The core formula is:
CPM = Budget ÷ (Impressions ÷ 1,000)
Equivalently:
Impressions = (Budget ÷ CPM) × 1,000
Budget = (Impressions ÷ 1,000) × CPM
When to optimize for CPM
- Top-of-funnel reach: brand awareness, product launches, event promotion.
- Video completion + reach blend: when viewable impressions matter (vCPM).
- Large format / DOOH: buying on reach/plays vs. clicks.
How to reduce your CPM (without hurting outcomes)
- Improve creative relevance: stronger hooks boost engagement signals and auction favorability.
- Tighten geo/time/daypart: avoid waste where your audience isn’t active.
- Supply path optimization (SPO): favor direct/premium paths; remove low-quality exchanges.
- Use viewability & brand safety filters: optimize for vCPM; low viewability often equals cheap for a reason.
- Right frequency caps: prevent overserving the same users.
- Negatives & exclusions: placements, apps, categories that rarely contribute.
FAQs
CPM pays for impressions (eyeballs), CPC for clicks, and CPA for outcomes (e.g., leads/sales).
Awareness campaigns often use CPM; performance campaigns lean into CPC/CPA.
It varies by market, inventory quality, and format. Social feed display may be low single-digits; premium news/video can be 2–5× or more.
Focus on vCPM (viewable CPM) when quality/viewability is key.
Yes - high viewability often earns better auction outcomes; filtering IVT can raise headline CPM but improves real effectiveness.
eCPM is “effective CPM” - a normalized revenue/spend per 1,000 impressions, used to compare mixed buys or monetization sources.
Seasonality, competition, targeting, creative fatigue, and inventory quality all move auction dynamics-and your CPM.