SEO ROI Calculator
Enter organic traffic, conversion rate, AOV, and monthly SEO spend to get a clear ROI number.
Free, no sign-upUpdated
Use the tool
Your numbers
Annual projection
How this is calculated
Conversions = Sessions × (Conv. Rate / 100)
Revenue = Conversions × Average Order Value
Gross profit = Revenue × Margin %
Profit = Gross profit − Monthly SEO Cost
ROI = (Profit / SEO Cost) × 100
Break-even sessions = SEO Cost ÷ (Order Value × Margin %) ÷ Conv. Rate
Simplified model. It counts every organic session as won by the SEO spend; use only the sessions SEO added for a stricter figure. Actual ROI also depends on attribution and sales cycle length.
What it calculates
- Monthly conversions from organic traffic
- Monthly organic revenue (conversions × AOV)
- Monthly net profit (revenue − SEO investment)
- SEO ROI %: net profit divided by SEO spend
Use this in budget reviews
"SEO is hard to measure" is a weak answer. Monthly sessions × conversion rate × AOV − monthly spend = a number you can put in a slide and defend. Run the numbers even roughly: directional clarity beats no number.
How to use it
- Enter your current monthly organic sessions from GSC
- Add your site's average conversion rate and average order value
- Enter monthly SEO investment (agency retainer, tools, or internal cost)
- Read the ROI percentage: above 0% means you're generating positive return
Using it for projections
Replace current traffic with your projected target traffic (from keyword research) to model the value of a new ranking before you pitch the budget. Treat the output as an order-of-magnitude estimate: conversion rates vary by landing page, seasonality matters, but it's more defensible than gut feel.
Using it as an enterprise SEO ROI calculator
The formula doesn't change at enterprise scale, but two things usually get it wrong: whose traffic counts, and whose spend does.
- Run it per market or per brand, not blended. A single global ROI number hides which market is actually paying back and which one is being carried by the others.
- Include the full spend stack. Agency retainer, tooling licenses, and internal headcount time, not just the line item finance sees.
- Pair the ROI % with a payback period. "Turns positive in month 8" lands better in a board deck than an isolated percentage, and it's the same inputs, just tracked month over month instead of as one snapshot.
Frequently asked questions
Is this SEO ROI calculator free?
Yes, free and with no signup.
What is a good SEO ROI?
It varies by margin and industry. Any positive return beats most paid channels over time, since organic clicks do not cost per visit once you rank. Many campaigns turn positive after 6 to 12 months rather than in the first quarter.
How is SEO ROI calculated?
Revenue from organic minus SEO cost, divided by SEO cost, as a percentage. Revenue is monthly sessions times conversion rate times average order value.
Can I use this as an enterprise SEO ROI calculator?
Yes, run it once per market, brand, or site rather than on blended totals, and include agency, tooling, and internal time in the spend figure. The formula is identical at any scale; what changes is how carefully you segment the inputs.
Related tools: CTR calculator and customer lifetime value calculator. Background reading: from data to action.