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How this calculator works
The calculator first determines the number of email opt-ins by multiplying total visitors by the opt-in rate. Next, email click-throughs are calculated by multiplying opt-ins by the email click rate, and paying customers are derived by multiplying click-throughs by the checkout conversion rate. Gross revenue is customers multiplied by average order value. Net profit subtracts both traffic costs (such as ad spend or content marketing cost per visitor) and fixed costs from gross revenue. Profit margin is computed as net profit divided by gross revenue. The funnel model helps identify which stage has the biggest drop-off and therefore the highest optimization leverage.
Useful scenarios
- A course creator with 8,000 monthly visitors, 20% opt-in, 35% email click-through, 10% checkout conversion on a $200 course with $0.15/visitor ad cost.
- A SaaS founder with 25,000 visitors, 10% sign-up, 50% activation, 5% paid conversion on a $29/month product with $0.05/visitor content marketing cost.
- A digital product seller with 5,000 visitors, 25% email capture, 25% click rate, 12% conversion on a $47 template with zero traffic cost (organic).
FAQ
What's a healthy end-to-end conversion rate?
For most online funnels: 0.5–2% end-to-end (visitor to customer) is good. Top-performing funnels hit 3–5%. If your rate is below 0.5%, focus on improving one stage at a time rather than trying to fix everything at once.
Should I include all costs or just direct funnel costs?
Include direct costs (ads, landing page, email tool, payment processing). Don't include fixed costs like rent or salary that exist regardless of the funnel. The goal is to measure funnel-level profitability.
What's the best way to improve funnel profit?
Highest leverage: increase AOV (upsells, bundles), improve checkout conversion (reduce friction), or reduce traffic cost (switch to organic). Small improvements at multiple stages compound significantly.