eCPM is “effective cost per mille” (per 1,000 impressions). The same math can describe advertiser spend per 1,000 impressions or publisher revenue per 1,000 ad impressions — the key is using the correct definitions.

Are impressions the same as pageviews?

Not necessarily. For eCPM, impressions should usually mean ad impressions. Pageviews can differ based on ad density and fill rate.

How do I convert CPC and CTR to eCPM?

Use eCPM = CPC × (CTR/100) × 1,000. CTR here is a percentage (e.g., 0.5%).

Is eCPM the same as RPM/eRPM?

Not always. RPM/eRPM is often revenue per 1,000 pageviews, while eCPM is typically per 1,000 ad impressions. They can diverge when ad density or fill changes.

Why does eCPM change so much?

eCPM varies with geo mix, ad format, viewability/placement, fill rate, seasonality, and traffic quality. Segment before drawing conclusions from a blended average.

eCPM (effective CPM) calculator

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.

Use calculator See features

Calculator

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)

Ad impressions

eCPM (per 1,000)

Summary

Revenue / spend (your currency)

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.

AI insights

Get practical interpretation of your eCPM and next steps (optional).

Avoid sharing personal or sensitive data. AI output is advisory and may be inaccurate.

Context (optional)

References

Competitor calculators and definitions used for assumptions and formulas:

Related calculators

Explore nearby calculators for CPM, CPC, and revenue planning:

Digital CPM Calculator CTR Calculator CPC Calculator CPM Earnings Calculator

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 calculator

Disclaimer: 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.

eCPM (effective CPM) calculator

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.

Use calculator See features

Calculator

Fill any two fields and leave the third blank — the calculator will solve it.

Revenue / spend (your currency)

Ad impressions

eCPM (per 1,000)

Summary

Revenue / spend (your currency)

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

AI insights

Get practical interpretation of your eCPM and next steps (optional).

Avoid sharing personal or sensitive data. AI output is advisory and may be inaccurate.

Context (optional)

References

Competitor calculators and definitions used for assumptions and formulas:

Related calculators

Explore nearby calculators for CPM, CPC, and revenue planning:

Digital CPM Calculator CTR Calculator CPC Calculator CPM Earnings Calculator

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 calculator

eCPM Calculator

Features

Two-of-three solving

CPC + CTR conversion

Copyable summary

Optional AI insights

How it works

Choose a mode

Enter your inputs

Copy and document

FAQ

What does eCPM mean?

Are impressions the same as pageviews?

How do I convert CPC and CTR to eCPM?

Is eCPM the same as RPM/eRPM?

Why does eCPM change so much?

Calculate eCPM in seconds

eCPM Calculator

Features

Two-of-three solving

CPC + CTR conversion

Copyable summary

Optional AI insights

How it works

Choose a mode

Enter your inputs

Copy and document

FAQ

What does eCPM mean?

Are impressions the same as pageviews?

How do I convert CPC and CTR to eCPM?

Is eCPM the same as RPM/eRPM?

Why does eCPM change so much?

Calculate eCPM in seconds