eCPM Calculator
Calculate eCPM (effective CPM) from revenue and ad impressions. Solve for revenue or impressions, convert CPC + CTR to eCPM, and copy a clean summary.
eCPM can be computed from spend (advertiser) or revenue (publisher). Use ad impressions (not pageviews) where possible and keep metrics from the same time window. CTR is entered as a percentage in the CPC + CTR tab.
Fill any two fields and leave the third blank — the calculator will solve it.
Revenue / spend (your currency)
75
Ad impressions
50,000
eCPM (per 1,000)
1.5
Formula
Formula (solve eCPM): eCPM = (revenue / impressions) × 1,000; Revenue = (impressions / 1,000) × eCPM; Impressions = (revenue / eCPM) × 1,000
Assumptions
Assumptions: Use ad impressions where possible; keep revenue/spend and impressions in the same time window; CTR is entered as a percentage in the CPC + CTR conversion. This is calculation/planning math, not a guarantee.
Get practical interpretation of your eCPM and next steps (optional).
Competitor calculators and definitions used for assumptions and formulas:
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Features
Two-of-three solving
Fill any two of revenue, impressions, and eCPM — the calculator solves the third.
CPC + CTR conversion
Convert click-based pricing into an eCPM equivalent for comparison.
Copyable summary
Copy inputs, result, formulas, and assumptions for reports or spreadsheets.
Optional AI insights
Get practical interpretation and next steps (with graceful fallback when AI is unavailable).
How it works
Choose a mode
Use revenue/impressions/eCPM (two-of-three) or convert CPC + CTR into eCPM.
Enter your inputs
Use ad impressions (not pageviews) and keep the time window consistent.
Copy and document
Copy a summary and note assumptions such as impression definition and CTR units.
FAQ
Calculate eCPM in seconds
Solve eCPM, revenue, or impressions and unify pricing models with a copy-ready summary.
Use calculatorDisclaimer: This tool provides calculation and planning math only. Results depend on correct metric definitions (ad impressions vs pageviews), time window consistency, and your platform’s reporting.