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Lead Generation ROI Calculator — CPL, CPA, Channel ROI
Cost per lead, cost per customer, channel ROI, and net profit — for one campaign or one entire channel. Decide whether to scale up, hold, or kill before the next budget cycle.
Lead-gen ROI math — and why most teams over-budget unprofitable channels
Most marketing teams measure CPL (cost per lead) and call it a day. CPL alone is useless — a $20 CPL with 1% lead-to-customer conversion is worse than a $200 CPL with 30% conversion. This calculator forces the full funnel: CPL → MQL rate → close rate → CPA → channel ROI.
The formulas
CPL = spend / leads MQLs = leads × MQL rate customers = MQLs × close rate CPA = spend / customers revenue = customers × avg deal size channel ROI = (revenue − spend) / spend × 100%
What healthy looks like (2026 B2B SaaS)
- CPL: $50-300 for typical inbound (content, organic, paid search). $300-1,000+ for cold outbound or paid social with strict ICP filters.
- Lead → MQL rate: 30-50% for SDR-qualified inbound, 10-20% for cold outbound.
- MQL → customer rate: 15-30% for typical B2B SaaS. Above 30% usually means the team is over-qualifying upstream.
- Channel ROI: 3-5× is healthy for steady-state channels. Above 8× means you are under-spending — scale up.
Where the calculator catches bad channels
The funnel multiplier (MQL × close rate) is usually 5-15% — meaning your effective CPA is 7-20× your CPL. So that "cheap" $30 CPL on paid social with 8% MQL × 12% close = $312 CPA. If your deal size is $400, channel ROI is 28% — barely break-even. The calculator surfaces this collapse in seconds.
How to use the result
- ROI > 5×: double the budget; you are leaving growth on the table.
- ROI 2-5×: hold and optimize. Test new creative, new audience cuts, but do not double down yet.
- ROI 1-2×: investigate. Lead quality? Sales motion? Cut spend by 30% and re-measure.
- ROI < 1×: kill or fix urgently. The channel is losing money.
How to calculate lead-generation ROI for one channel
Five inputs from your CRM. Outputs let you decide scale / hold / kill in 10 seconds.
Pick one channel + period
Last 90 days is the minimum for B2B SaaS — shorter periods are too noisy on lead-to-customer math.
Pull channel spend
All-in: media + content + agency + share of allocated salaries. If you under-count, ROI looks artificially high.
Count leads attributed
Use last-non-direct-click or your attribution model — but be consistent across channels.
Pull MQL and close rates
From your CRM. Use the cohort that came from THIS channel, not the company average.
Read channel ROI
Above 5×? Scale up. 2-5×? Hold + optimize. Below 2×? Fix or kill before the next cycle.
Frequently asked questions about lead-gen ROI
Lead-gen ROI = (revenue from leads − channel spend) / channel spend × 100%. To get revenue, multiply leads × MQL rate × close rate × avg deal size. The calculator does the funnel multiplication in one step.
3-5× channel ROI is healthy for steady-state lead-gen. Above 5× means you are under-spending and should scale. Below 2× means lead quality or sales motion needs investigation. Below 1× means the channel is losing money.
For this calculator, use whatever your CRM uses — consistency matters more than the model choice. The most defensible approach is data-driven multi-touch attribution (GA4, Bizible, HubSpot multi-touch), but that requires sophisticated setup. For directional answers, last-non-direct-click works.
Because the funnel narrows. Only ~30-50% of leads become MQLs, and only ~15-30% of MQLs become customers. Effective CPA = CPL / (MQL rate × close rate) — usually 7-20× higher than CPL. This is normal but most teams forget the multiplication.
90 days minimum for B2B SaaS, 30-60 days for transactional B2C. Shorter periods are too noisy on lead-to-customer math because deal cycles span 30-180 days. Kill decisions made on 14-day data are usually wrong.
No — it uses first-deal revenue. To incorporate LTV, multiply the avg deal size input by (LTV / first-deal-revenue). Or pair this calc with our CAC + LTV calculator for a fuller picture.
