# Lead Conversion Rate & Sales Funnel ROI Calculator Estimate lead conversion rates, attributed revenue, campaign ROI, and cost per lead to measure how well your sales funnel performs. --- - **Canonical URL:** https://dothecalculation.com/calculators/lead-conversion-roi-calculator - **Category:** Business tools - **Publisher:** Do The Calculation (https://dothecalculation.com) - **Cost:** Free, no account or sign-up required - **Privacy:** Runs entirely in the browser; inputs are never sent to a server - **Methodology:** https://dothecalculation.com/methodology --- ## Lead Conversion & Campaign ROI Calculator Turn raw leads and closed deals into a clear conversion rate, attributed revenue, net profit, and campaign ROI. - Lead-to-deal conversion rate - Attributed revenue and net profit - Cost per lead and campaign ROI ## Measuring Whether a Lead Campaign Actually Paid Off Generating leads is easy to measure by volume, but volume alone doesn't tell you whether a campaign made money. This calculator answers the question every marketing budget owner eventually has to answer: for every dollar spent generating leads, how many dollars in revenue and profit came back? It works from four inputs you almost always have on hand after a campaign wraps: how many leads came in, how many of those leads turned into closed deals, what the average deal is worth, and what the campaign cost to run. From those four numbers, it derives your conversion rate, the revenue attributable to the campaign, net profit, cost per lead, and return on investment. ## The Lead Conversion ROI Formulas $$\text{Conversion Rate} = \frac{\text{Closed Deals}}{\text{Leads}} \times 100$$ $$\text{Attributed Revenue} = \text{Closed Deals} \times \text{Average Deal Size}$$ $$\text{Net Profit} = \text{Attributed Revenue} - \text{Campaign Cost}$$ $$\text{ROI} = \frac{\text{Net Profit}}{\text{Campaign Cost}} \times 100$$ $$\text{Cost Per Lead (CPL)} = \frac{\text{Campaign Cost}}{\text{Leads}}$$ These five numbers together tell a complete story: conversion rate shows how well leads turn into business, attributed revenue and net profit show the dollar impact, ROI shows the return relative to spend, and cost per lead shows how efficiently the campaign generated raw interest in the first place. ## How to Use This Calculator Enter the total number of leads a campaign generated, how many of those leads closed into paying deals, your average deal size, and the total campaign cost (ad spend, agency fees, tools — whatever you're attributing to that campaign). The calculator divides closed deals by leads for your conversion rate, multiplies closed deals by average deal size for attributed revenue, subtracts campaign cost from that revenue for net profit, and expresses net profit as a percentage of campaign cost for ROI. ## Worked Example: 1,000 Leads, 50 Closed Deals A campaign generates 1,000 leads at a total cost of $15,000. Of those leads, 50 close into deals averaging $1,200 each. Conversion rate: 50 ÷ 1,000 × 100 = 5%. Attributed revenue: 50 × $1,200 = $60,000. Net profit: $60,000 − $15,000 = $45,000. ROI: $45,000 ÷ $15,000 × 100 = 300%. Cost per lead: $15,000 ÷ 1,000 = $15 — for every $15 spent generating a lead, the campaign returned $45 in net profit across the funnel. ## Reading Conversion Rate and CPL Together A high cost per lead isn't automatically bad, and a low one isn't automatically good — it depends on what happens after the lead comes in. A campaign with a $50 CPL but a 10% close rate on $2,000 deals can easily outperform a campaign with a $5 CPL and a 0.5% close rate, because the first campaign's attributed revenue per lead is far higher. When ROI comes in low or negative, the fix is usually in one of three places: the lead source itself (are these the right prospects, or just cheap traffic?), the sales follow-up process (are qualified leads being worked promptly and thoroughly?), or the deal economics (is the average deal size and margin large enough to justify the acquisition cost at all?). ## Related Calculators For a longer-horizon view that accounts for repeat purchases and retention, see the [customer acquisition cost calculator](/calculators/customer-acquisition-cost-calculator) or the [customer lifetime value calculator](/calculators/customer-lifetime-value-detailed-calculator). To compare this campaign's return against paid ad spend specifically, use the [return on ad spend calculator](/calculators/return-on-ad-spend-calculator). ## Frequently asked questions ### What counts as a "lead" in this calculator? Any prospect entering your pipeline from the campaign being measured — a form fill, a demo request, a phone inquiry, or any other trackable point of first contact you're attributing to that campaign. ### How do I calculate lead conversion rate? Divide the number of closed deals by the number of total leads, then multiply by 100. For example, 50 closed deals out of 1,000 leads is a 5% conversion rate. ### What is a good lead-to-close conversion rate? It varies widely by industry and deal complexity, but many B2B and B2C funnels see overall lead-to-close rates in the low single digits to low teens. Compare your own rate over time rather than chasing a universal benchmark. ### What should I include in campaign cost? Include everything you're attributing to the campaign: ad spend, agency or freelancer fees, tool and software costs, and any content production costs specific to that campaign. ### How is ROI different from ROAS? ROI in this calculator is net profit (revenue minus cost) divided by cost. Return on ad spend (ROAS) is typically gross revenue divided by ad spend, without subtracting the cost first — so ROAS numbers are usually higher than ROI numbers for the same campaign. ### Why is cost per lead (CPL) useful if it doesn't account for close rate? CPL isolates top-of-funnel efficiency — how cheaply you're generating raw interest — separately from how well your sales process converts that interest. Tracking both together shows you whether a problem is in lead generation or in follow-up. ### Does this calculator account for deals that haven't closed yet? No. It measures realized results from leads and deals that have already closed. For campaigns still in progress, you can re-run the calculation as more deals close to update your ROI in real time. ### Can I use this for a single ad channel instead of a whole campaign? Yes, as long as you can isolate the leads, closed deals, and cost specific to that channel. Many marketers run this calculator separately per channel to compare performance. ### What if my campaign cost was $0 (organic leads)? With zero campaign cost, ROI and cost per lead are not mathematically meaningful (division by zero), so this calculator reports them as 0. Attributed revenue and net profit will still be accurate and useful on their own. ### How often should I recalculate campaign ROI? For campaigns with a long sales cycle, recalculate monthly or quarterly as more leads finish working through the pipeline, since early-stage ROI numbers understate the eventual return. ## Related concepts - **Cost Per Lead (CPL)** — Total campaign cost divided by the number of leads generated, measuring top-of-funnel efficiency. - **Attributed Revenue** — The portion of closed-deal revenue credited to a specific campaign or lead source. - **Return on Investment (ROI)** — Net profit expressed as a percentage of the cost required to generate it. ## Related guides - [Profit Margin: Formulas, Examples, and Calculator Guide](https://dothecalculation.com/blog/business/profit-margin-calculation) — Calculate gross, operating, and net profit margins, understand margin versus markup, and use each result to make better pricing and cost decisions. ## Related calculators - [Commission Calculator](https://dothecalculation.com/calculators/commission-calculator) — Calculate sales commission earnings from flat rates, percentages, and tiered structures to quickly estimate payouts for any deal size. - [E-commerce Conversion Rate & Cart Abandonment Calculator](https://dothecalculation.com/calculators/ecommerce-conversion-calculator) — Calculate add-to-cart rate, cart abandonment rate, overall conversion rate, and lost revenue projections to optimize your online store. - [Overhead Rate Calculator](https://dothecalculation.com/calculators/overhead-rate-calculator) — Calculate your business overhead rate as a percentage of sales or labor cost to price products and services effectively and profitably. - [Customer Acquisition Cost (CAC) & LTV Calculator](https://dothecalculation.com/calculators/customer-acquisition-cost-calculator) — Calculate your customer acquisition cost, lifetime value, LTV to CAC ratio, and CAC payback period to measure marketing efficiency accurately. - [Customer Churn & Retention Calculator](https://dothecalculation.com/calculators/customer-churn-retention-calculator) — Calculate customer churn rate, retention rate, revenue churn rate, and customer lifetime value to understand subscriber loss and growth. - [Invoice Factoring Cost Calculator](https://dothecalculation.com/calculators/invoice-factoring-cost-calculator) — Calculate the true cost, APR, and discount rate of factoring invoices to access immediate cash flow instead of waiting on client payments. --- _This calculator is for educational and campaign-planning purposes only. Real marketing performance depends on attribution methodology, sales cycle length, deal quality, and reporting accuracy. Validate significant budget decisions against your actual CRM and finance data._ --- _Source: [Do The Calculation](https://dothecalculation.com/calculators/lead-conversion-roi-calculator). Quote freely with attribution and a link to this page._