SEO ROI Calculator
Forecast leads, revenue, and payback period from organic search. Plug in your traffic, conversion rate, and monthly investment.
Monthly trajectory
S-curve ramp · 12 monthsHow to use this calculator
Plug in your monthly organic visitors target at the steady state you're aiming for — usually six to twelve months out from now. Then your conversion rate from visitor to lead, the average value of a customer, and the monthly cost of the SEO program (agency, tools, content, headcount).
The calculator gives you four numbers: monthly leads, monthly revenue, ROI as a multiple, and payback period. The S-curve below models a realistic ramp — most SEO programs hit ~50% of their year-one peak by month 6, and full peak by month 12. You'll see a payback point where cumulative revenue crosses cumulative cost.
Use it for…
- Pitching SEO to a CFO or founder.
- Comparing in-house vs agency cost structures.
- Setting realistic 12-month targets for a content team.
- Sanity-checking whether SEO is worth doing at your deal size.
Frequently asked questions
How long until SEO pays off?
Most projects see meaningful organic traffic at 4–6 months and break even on cost between months 6 and 12. Competitive industries take longer; established sites with good domain authority can pay back in 2–3 months. Use the calculator above to model your own timeline.
What's a good ROI for SEO?
Mature SEO programs typically run 3–10x ROI annually after year one. The high end is unusual but reachable for B2B SaaS with high LTV and content moats. The low end (3x) is healthy for most businesses; below that, the channel is questionable.
Should I include all SEO costs in the calculator?
Yes — agency retainer, content production, tools (Ahrefs, etc.), and a fraction of any SEO-dedicated headcount. The calculator's investment field should equal your true monthly burn on SEO. Underestimating it makes ROI look better than it is.
How accurate is this calculator?
It's a directional model, not a forecast. Real SEO programs are non-linear: a single ranking page can 10x your traffic overnight, and Google updates can wipe out 30% of it the next quarter. Use the calculator to size the opportunity and set targets, not to predict month-by-month numbers.
What's a typical conversion rate for organic traffic?
Informational SEO pages convert at 0.5–2% to email signups; bottom-of-funnel pages (pricing, comparison, alternatives) convert at 3–8%. B2B SaaS sees the higher end on commercial-intent terms. If you don't know yours, use 1.5% as a starting estimate.
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