Free organic growth economics tool

SEO ROI Calculator

Estimate the revenue, profit and payback created by incremental organic traffic, while separating the value of new SEO-driven traffic from traffic the business would likely have received anyway.

Simple calculator

Enter the incremental SEO lift

Steady-state model

Organic traffic lift

Incremental organic visits / month

visits

Organic conversion rate

Revenue per conversion

Profit & investment

Gross margin

Monthly SEO cost

One-time SEO setup cost

Analysis horizon

months

Simple modelIncremental organic revenue = added visits × conversion rate × revenue per conversion. Incremental gross profit is compared with the monthly SEO investment and one-time setup cost to calculate net contribution, ROI and payback.

Advanced calculator

Compare baseline vs SEO-driven organic growth

Incremental traffic model

Organic traffic growth

Starting monthly organic visits

visits

Baseline monthly organic growth

% / mo.

Expected without the incremental SEO program. SEO-path monthly organic growth

% / mo.

SEO ramp period

months

Growth uplift scales in gradually.

Forecast horizon

months

Paid-equivalent CPC

Used only for media-equivalent traffic value, not ROI.

Conversion economics

Organic conversion rate

Revenue per conversion

Refund / cancellation leakage

Gross margin

Additional variable cost / conversion

Future contribution credit / conversion

Optional value beyond the tracked conversion period. Target SEO ROI

SEO investment

One-time technical / strategy setup

Monthly SEO agency / content cost

Monthly tools / outreach / data cost

Monthly internal labor allocation

Target payback

months

Target net SEO contribution

Advanced SEO modelThe calculator runs a baseline organic-traffic path and an SEO-driven path. Only the difference between the two is credited to the SEO investment. Incremental visits are converted into revenue and contribution, then SEO costs are deducted to calculate ROI and payback.

Advanced result

Incremental SEO economics

Net SEO contribution$0Incremental operating contribution less SEO investment

SEO ROI——

Payback period——

Cumulative incremental organic visits0

Paid-equivalent traffic value$0

Incremental conversions0

Incremental realized revenue$0

Operating contribution before SEO$0

Total SEO investment$0

Contribution per incremental visit$0

SEO cost per incremental visit$0

SEO acquisition cost / conversion$0

Revenue / SEO dollar—

Ending monthly traffic lift0

Break-even monthly traffic lift0

Gap / surplus vs contribution target$0

Required SEO-path monthly growth—

SEO signal—

Baseline growth—

SEO growth path—

Target ROI—

Target payback—

OfficeQ readout

Organic traffic forecast

Baseline vs SEO-driven traffic

Incremental attribution model

Month	Baseline organic visits	SEO-path organic visits	Incremental visits	Incremental revenue	Net monthly contribution	Cumulative net contribution

Growth sensitivity

ROI at different SEO-path growth rates

Baseline growth held constant

SEO monthly growth	Cumulative incremental visits	Incremental revenue	Net contribution	SEO ROI	Ending monthly traffic lift

Conversion sensitivity

SEO economics at different organic conversion rates

Traffic path held constant

Conversion rate	Incremental conversions	Incremental revenue	Net contribution	SEO ROI	SEO CAC

Spend sensitivity

ROI at different monthly SEO investment levels

Traffic and conversion assumptions held constant

Monthly SEO agency/content cost	Total SEO investment	Net contribution	SEO ROI	Payback	Cost / incremental visit

Scope

SEO ROI depends on incremental attribution

This calculator estimates SEO economics from the assumptions entered. It does not prove that all observed organic growth was caused by SEO. Algorithm changes, seasonality, brand demand, PR, product changes, paid media, site migrations and broader market trends can affect organic traffic and conversions. Paid-equivalent traffic value is a comparison metric only and should not be added to revenue or contribution when calculating ROI. Future contribution should be used conservatively and only when it represents value beyond the revenue already entered.