CPM (cost per mille) is the price paid for 1,000 ad impressions.

How do I calculate spend from CPM and impressions?

Use: Spend = (Impressions / 1,000) × CPM.

How do I estimate impressions from budget and CPM?

Use: Impressions = (Spend / CPM) × 1,000.

Are impressions the same as reach?

No. Impressions count total ad views, while reach is unique people. High frequency can increase impressions without increasing reach.

Why can actual spend differ from this estimate?

Real CPM varies due to auction dynamics, targeting, placements, seasonality, and measurement/viewability rules. Treat this as a planning estimate.

Yes—this calculator is free and works without signup.

Is this Critical Path Method (CPM) or cost per mile?

No. This page uses CPM as cost per 1,000 impressions in advertising.

Media Planning Tool

CPM Spend Calculator

Estimate ad spend from CPM and impressions (or estimate impressions from budget). Includes formulas, copy-ready summary, and optional AI insights—free, no signup.

Use calculator See features

CPM ↔ Spend CalculatorFreeNo signup

CPM here means Cost Per Mille (ad pricing), not Critical Path Method (CPM) or cost per mile.

Impressions

CPM (per 1,000 impressions)

Channel preset (optional)

Benchmarks are planning-only starting points. Use your own historical CPM data when possible.

Use CPM range

Enable range mode to see spend/impressions ranges from CPM min/max.

Spend result

$4,000.00

Spend = (Impressions / 1,000) × CPM

Formula

Spend = (Impressions / 1,000) × CPM

Assumptions: CPM is priced per 1,000 impressions. This is a planning estimate; actual CPM/spend can vary by platform, auction, targeting, and measurement.

AI insights

Get practical guidance based on your inputs and assumptions.

Avoid sharing personal or sensitive data. AI output is advisory and not financial advice.

Context (optional)

References

Authoritative definitions for CPM and impression-based bidding:

Google Ads Help: Cost-per-thousand impressions (CPM) definition

Related calculators

Explore nearby tools for media math and planning.

CPM Budget Calculator CPM Reach Calculator CPM to RPM Calculator CPC to CPM Calculator

Why this CPM spend tool is different

Two-way conversion

Calculate spend from impressions, or reverse it to estimate impressions from budget.

Channel presets + CPM ranges

Start from common channel benchmarks and see spend/impressions as a range for quick what-if planning.

Explicit assumptions

Makes the CPM math and units clear so teams and clients align on definitions.

Copy-ready summary

Copy inputs, formulas, and results for media plans, proposals, or reporting.

Optional AI insights

Get guidance on sensitivity, risks, and what to measure next (if enabled).

How it works

Pick a direction

Choose Impressions → Spend or Spend → Impressions.

Enter CPM and your known value

Provide CPM plus impressions or budget (spend) to calculate the missing output.

Copy and iterate

Copy a summary and tweak CPM (or use a CPM range) to explore different scenarios.

FAQ

Run a quick budget scenario

Estimate spend or impressions in seconds, then copy a summary for your plan.

Use calculator

This tool provides planning estimates only. Actual CPM and spend may vary by platform, inventory, targeting, and measurement.

Media Planning Tool

CPM Spend Calculator

Estimate ad spend from CPM and impressions (or estimate impressions from budget). Includes formulas, copy-ready summary, and optional AI insights—free, no signup.

Use calculator See features

CPM ↔ Spend CalculatorFreeNo signup

CPM here means Cost Per Mille (ad pricing), not Critical Path Method (CPM) or cost per mile.

Impressions

CPM (per 1,000 impressions)

Channel preset (optional)

Benchmarks are planning-only starting points. Use your own historical CPM data when possible.

Use CPM range

Enable range mode to see spend/impressions ranges from CPM min/max.

Spend result

$4,000.00

Spend = (Impressions / 1,000) × CPM

Formula

Spend = (Impressions / 1,000) × CPM

Assumptions: CPM is priced per 1,000 impressions. This is a planning estimate; actual CPM/spend can vary by platform, auction, targeting, and measurement.

AI insights

Get practical guidance based on your inputs and assumptions.

Avoid sharing personal or sensitive data. AI output is advisory and not financial advice.

Context (optional)

References

Authoritative definitions for CPM and impression-based bidding:

Google Ads Help: Cost-per-thousand impressions (CPM) definition

Related calculators

Explore nearby tools for media math and planning.

CPM Budget Calculator CPM Reach Calculator CPM to RPM Calculator CPC to CPM Calculator

Why this CPM spend tool is different

Two-way conversion

Calculate spend from impressions, or reverse it to estimate impressions from budget.

Channel presets + CPM ranges

Start from common channel benchmarks and see spend/impressions as a range for quick what-if planning.

Explicit assumptions

Makes the CPM math and units clear so teams and clients align on definitions.

Copy-ready summary

Copy inputs, formulas, and results for media plans, proposals, or reporting.

Optional AI insights

Get guidance on sensitivity, risks, and what to measure next (if enabled).

How it works

Pick a direction

Choose Impressions → Spend or Spend → Impressions.

Enter CPM and your known value

Provide CPM plus impressions or budget (spend) to calculate the missing output.

Copy and iterate

Copy a summary and tweak CPM (or use a CPM range) to explore different scenarios.

FAQ

Run a quick budget scenario

Estimate spend or impressions in seconds, then copy a summary for your plan.

Use calculator

This tool provides planning estimates only. Actual CPM and spend may vary by platform, inventory, targeting, and measurement.

CPM Spend Calculator

Why this CPM spend tool is different

Two-way conversion

Channel presets + CPM ranges

Explicit assumptions

Copy-ready summary

Optional AI insights

How it works

Pick a direction

Enter CPM and your known value

Copy and iterate

FAQ

What is CPM?

How do I calculate spend from CPM and impressions?

How do I estimate impressions from budget and CPM?

Are impressions the same as reach?

Why can actual spend differ from this estimate?

Is this free?

Is this Critical Path Method (CPM) or cost per mile?

Run a quick budget scenario

CPM Spend Calculator

Why this CPM spend tool is different

Two-way conversion

Channel presets + CPM ranges

Explicit assumptions

Copy-ready summary

Optional AI insights

How it works

Pick a direction

Enter CPM and your known value

Copy and iterate

FAQ

What is CPM?

How do I calculate spend from CPM and impressions?

How do I estimate impressions from budget and CPM?

Are impressions the same as reach?

Why can actual spend differ from this estimate?

Is this free?

Is this Critical Path Method (CPM) or cost per mile?

Run a quick budget scenario