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Cost Per Lead Calculator

Calculate cost per lead (CPL) from campaign spend and leads, then see the cost per customer, revenue, marketing ROI and the most you can pay per lead and still break even.

Campaign spend

Leads generated

Lead-to-customer rate

Average revenue per customer

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How it works

CPL = campaign spend ÷ leads · Customers = leads × lead-to-customer rate · Cost per customer = spend ÷ customers · Revenue = customers × revenue per customer · ROI = (revenue − spend) ÷ spend · Break-even CPL = revenue per customer × lead-to-customer rate

Cost per lead tells you what each enquiry, form fill or sign-up cost to generate. On its own it says little — a cheap lead that never buys is expensive — so the calculator links it to your close rate and average revenue. The break-even CPL is the most you can pay per lead before the campaign loses money on revenue; use your gross profit per customer instead of revenue to break even on profit.

Worked example

A $2,500 campaign that brings 125 leads has a cost per lead of $2,500 ÷ 125 = $20.00. If 10% become customers worth $800 each, you win 12.5 customers at $200.00 each, earning $10,000.00 — a 300.00% marketing ROI. You could pay up to $80.00 per lead and still break even on revenue.

Sources: HubSpot — Cost per lead · Google Ads Help — Cost per conversion

Frequently asked questions

How do you calculate cost per lead?

Divide the total spend on a campaign or channel by the number of leads it produced. $2,500 ÷ 125 leads = $20 per lead. Include agency and tool fees if you want the fully loaded CPL.

What is a good cost per lead?

It depends on what a customer is worth. A good CPL is comfortably below your break-even CPL — revenue (or profit) per customer × the share of leads that become customers. B2B and high-ticket services can afford far higher CPLs than low-price e-commerce.

What is the difference between CPL and CPA?

CPL measures cost per lead — someone who shows interest. CPA (cost per acquisition) measures cost per conversion, usually a sale or customer. CPA = CPL ÷ lead-to-customer rate.

How can I lower my cost per lead?

Improve landing-page conversion rate, narrow targeting to people likely to convert, test offers (guides, quotes, free trials), and shift budget to channels with lower CPL and good lead quality.

Related calculators

CPA Calculator

Calculate cost per acquisition (CPA) from ad spend and conversions — what each sale, signup or lead costs you.

CAC Calculator

Calculate customer acquisition cost (CAC) from sales and marketing spend, and check the LTV:CAC ratio that tells you if growth pays.

Conversion Rate Calculator

Find your conversion rate from conversions and visitors — and see how many conversions a target rate would produce.

Marketing ROI Calculator

Measure the true return on a marketing campaign from the revenue it drove, your gross margin and the amount you spent.

Lead Scoring Threshold Calculator

Set the right lead-score cutoff by matching how many leads sales can work — see the pass rate, leads handed over and revenue.

Planning estimate only. Real results depend on your actual costs, prices, taxes and market — check the figures with your accountant or adviser before making business decisions.