GrowthLabsby Rohan Neure
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Free paid media tool / Delivery metrics

CPC, CPM and CTR calculator for paid media reporting

CPC, CPM and CTR describe media delivery and response. They help diagnose auction and creative behaviour but do not prove lead quality, sales or profitable growth.

Use the calculator

Free · No account · Inputs stay in your browser

Analytics and reporting illustration across desktop and mobile dashboards
Measurement is useful when events, reporting and commercial decisions share the same definitions.

Interactive tool

Change the assumptions. Compare the scenario.

Enter non-sensitive planning values. The output updates in your browser and is not sent to GrowthLabs.

Cost per click (CPC)
$0.4
Cost per 1,000 impressions (CPM)
$10
Click-through rate (CTR)
2.5%
Commercial interpretation
Go deeper

Connect these delivery metrics to qualified conversions, CPA, value and margin.

Formula and inputs

Know what the result actually represents.

CPC = spend ÷ clicks. CPM = spend ÷ impressions × 1,000. CTR = clicks ÷ impressions × 100.

Inputs used

  • Advertising spend
  • Recorded impressions
  • Recorded clicks
  • Currency symbol

Important cautions

  • +Platform definitions and invalid-traffic controls can differ.
  • +A cheap click can still be irrelevant.
  • +CTR comparisons require similar placements, audiences and objectives.
  • +Reconcile campaign metrics with qualified conversion economics.

Decision context

A calculator is useful when it improves the next decision.

Use this free planning model to make assumptions visible, compare scenarios and identify which input deserves validation before budget, campaign or conversion decisions are made.

Model

Start with defensible inputs

Use recent, relevant business or platform data where possible. Label estimates clearly so the result is not mistaken for measured performance.

Compare

Change one assumption at a time

Compare a baseline with one or two realistic scenarios. This makes the commercial effect of each rate, cost or volume assumption easier to understand.

Validate

Return to real performance data

Use Google Ads, Meta Ads, GA4, CRM, sales or finance data to test whether the scenario reflects qualified enquiries, customers and actual economics.

How to use the output

Move from arithmetic to a better decision.

  1. 01

    Align the period

    Export spend, impressions and clicks from the same dates and scope.

  2. 02

    Segment responsibly

    Compare like-for-like campaigns, placements, devices and audiences.

  3. 03

    Read the relationship

    Use CPM for delivery cost, CTR for response and CPC for their combined effect.

  4. 04

    Go deeper

    Connect the delivery layer to conversion rate, CPA, value and margin.

Tool questions

Definitions and limits, answered.

01

What is CPC?

Cost per click is advertising spend divided by recorded clicks.

02

What is CPM?

Cost per mille is advertising spend per one thousand recorded impressions.

03

What is CTR?

Click-through rate is recorded clicks divided by recorded impressions, multiplied by 100.

04

Which metric matters most?

None is sufficient alone. Use them to diagnose delivery, then make commercial decisions with qualified outcomes and economics.

Continue with context

Use the scenario to ask a sharper growth question.

Discuss your scenario All free tools
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