[ FREE LEAD ECONOMICS TOOL ]

KNOW WHAT A
LEAD IS WORTH.

Estimate the maximum sensible cost per lead before you spend on Google or Meta. Change the assumptions to match your business—the formula stays visible.

01
Your assumptions

Use gross profit and qualified leads—not headline revenue and raw forms.

02
Monthly planning estimate

A directional model—not a guarantee of advertising performance.

Break-even cost per lead$315

At this CPL, expected gross profit and lead spend are equal before overhead, agency fees, refunds and repeat purchases.

Qualified leads14
Expected customers4.2
Gross profit / customer$1,500
Expected gross profit$6,300
Lead spend$2,000
After lead spend$4,300
MODELED RETURN ON LEAD SPEND215%

This percentage uses gross profit after modeled lead spend. It intentionally excludes lifetime value unless you put a defensible repeat-purchase value into the average sale.

Pressure-test this model with us ↗Check the website converting those leads

[ THE FORMULA ]

TRANSPARENT
BY DESIGN.

Gross profit per customer = average first sale × gross margin.

Expected customers = monthly leads × qualified lead rate × close rate.

Break-even CPL = gross profit per customer × qualified lead rate × close rate.

Contribution after lead spend = expected gross profit − monthly leads × cost per lead.

This calculator is an educational planning tool. It does not include fixed overhead, taxes, agency fees, refunds, payment timing, capacity constraints or cash-flow risk.