SEO ROI Calculator
Estimate your return on investment from SEO. Input your conversion data and SEO costs to see projected ROI over your chosen time period.
Calculate Your SEO ROI
How It Works
ROI = (A x B x r x (T_total - T_ramp) - M x T_total) / (M x T_total)Where A = conversion value, B = baseline conversions, r = conversion increase, T_ramp = ramp-up months, T_total = total months, M = monthly cost.
Is SEO worth the investment?
Unlike paid ads — where traffic stops the moment you stop paying — SEO is a compounding asset. The rankings and content you build keep driving organic traffic for months or years after the work is done, so the return improves over time and the effective cost-per-visit keeps falling. This SEO ROI calculator turns that into concrete numbers based on your own business inputs.
What the calculator models
- Revenue from SEO — your conversion value × the additional conversions SEO is expected to drive.
- Ramp-up — SEO takes time to compound, so the model excludes returns during your ramp-up months for a realistic estimate.
- Net return & ROI % — total projected revenue minus total investment, expressed as a percentage of spend.
Use it to build a business case, compare SEO against other channels, or sanity-check an agency proposal. When you’re ready for numbers tailored to your domain and market, try Is SEO Worth It? for a data-driven opportunity analysis, or talk to RedSEO about a custom projection.