Growth calculator

CPA / Cost Per Lead Calculator

Calculate cost per lead, cost per acquisition, required close rate, and gross profit after acquisition costs.

Inputs

Defaults are visible and can be changed before calculation.

Inline validation messages appear here when a value needs to be corrected.

Currency *Applies to campaign cost, CPL, CPA, and profit outputs.Ad spend *Paid media spend for the campaign or period.Leads *Total leads generated by the campaign.Customers *Customers acquired from those leads.Qualified leadsOptional count of leads that met your qualification criteria.Target CPAOptional target cost per acquired customer.Target CPLOptional target cost per lead used for constraint classification.Average customer valueOptional revenue or value per acquired customer for profit context.Gross margin rateGross margin applied to average customer value.Agency feesManagement or agency fees attributed to this campaign.Creative costsCreative production cost attributed to this campaign.Software costsCampaign tools or software cost attributed to this campaign.

Results

Results are deterministic scenario outputs, not guarantees.

Enter values and calculate to see the summary, supporting metrics, warnings, and interpretation.

Interpretation

Deterministic interpretation rules will explain what the modeled result means once a calculation is available.

Detailed breakdown

Intermediate calculation rows will appear here after calculation.

Formula

Total campaign cost

totalCampaignCost = adSpend + agencyFees + creativeCosts + softwareCosts

Cost per lead

cpl = totalCampaignCost / leads

Cost per acquisition

cpa = totalCampaignCost / customers

Required close rate

requiredLeadToCustomerRate = (totalCampaignCost / targetCPA) / leads

Maximum affordable CPL

maximumCPLForTargetCPA = targetCPA × leadToCustomerRate

Assumptions

Ad spend, agency fees, creative costs, and software costs are included in total campaign cost.
Target CPA and target CPL are optional; a value of 0 means no target constraint is applied.
Gross profit after acquisition uses average customer value multiplied by gross margin, less total campaign cost.
Outputs are deterministic campaign math, not forecasts or guarantees.

Worked example

Example: campaign CPA and CPL

A campaign with $10,000.00 in ad spend, 500 leads, and 25 customers has a $20.00 CPL and $400.00 CPA before optional fees.

FAQ

What is the difference between CPL and CPA?

CPL divides campaign cost by leads, while CPA divides campaign cost by acquired customers.

How is maximum affordable CPL calculated?

When a target CPA is entered, the calculator multiplies that target CPA by the current lead-to-customer rate.

Why include agency, creative, and software costs?

Including non-media costs shows fully loaded campaign economics instead of media-only efficiency.

Related calculators

CAC Calculator Paid Ads Budget Calculator Break-Even CPC Calculator

Want help interpreting the model?

Use this calculator as a deterministic planning tool, then talk with Propel Collective about which assumptions are worth validating first.

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