Free SEO ROI Calculator

SEO ROI is the extra revenue organic search brings in, minus what the SEO work cost, divided by that cost. If a year of SEO costs 12,000 and brings in 30,000 of extra revenue, the ROI is (30,000 - 12,000) / 12,000 = 150 percent.

The hard part is the revenue side, because most sites do not sell directly from a search visit. The calculator builds it from four numbers you can find in your analytics:

1. Extra sessions = target organic sessions a month - organic sessions a month now.
2. Extra conversions = extra sessions x conversion rate.
3. Monthly gain = extra conversions x value per conversion. Yearly gain is 12 months at that level.
4. Traffic grows in a straight line from today's level to the target over the months you enter, then holds. Month 3 of a 6-month ramp earns half the monthly gain.
5. First-year ROI = (gain in months 1 to 12 - cost of months 1 to 12) / cost of months 1 to 12.
6. Payback month = the first month in which the total gain so far reaches the total cost so far.

Take a shop with 2,000 organic sessions a month that wants 6,000 within 6 months. 2 percent of visitors buy, an order is worth 50, and the SEO work costs 1,000 a month.

Change one input at a time to see which one moves the answer most. For most sites it is the conversion rate or the order value, not the traffic target, which is why SEO and conversion work pay off best together.

• Organic sessions now: in Google Analytics 4, open Reports, then Acquisition, then Traffic acquisition, and read the Organic Search row for a recent full month.
• Target sessions: base it on the keywords you plan to win. Search volume x the expected CTR at your target position gives the visits one keyword can bring; the CTR calculator on this site works this out for positions 1 to 10.
• Conversion rate: conversions from organic sessions divided by organic sessions, from the same report with your key event selected. Use the organic rate, not the site-wide one.
• Value per conversion: average order value for a shop. For leads, multiply the share of leads that become customers by what a customer is worth.
• Monthly SEO cost: what you pay an agency, freelancers or tools, plus the hours your own team spends, at what those hours cost you.

Use conservative numbers. A plan that pays back with a modest target and the conversion rate you already have is a safer bet than one that only works if everything goes right.

Yes. Content marketing earns its return the same way: new articles bring new organic sessions, and some of those sessions convert. Enter the sessions your blog gets now, the sessions you expect once the new articles rank, and the monthly cost of writing, editing and publishing them.

Two adjustments make the result more honest. Articles usually take longer to rank than technical fixes, so give content a longer ramp, often 6 to 12 months. And blog readers convert less often than visitors to product pages, so use the conversion rate of your blog traffic, which may be a fraction of a percent, or count newsletter sign-ups or demo requests at a lower value each.

Articles keep bringing visits after you stop paying for them, while paid ads stop the day the budget does. The 12-month ROI leaves that out, so the payback month is often the fairer figure for comparing content with ads.

Any ROI above zero means the work earned more than it cost, but first-year SEO ROI is often low or negative, because traffic takes months to grow while the cost starts on day one. Judge a plan by its payback month and by where it stands at the end of year two, not by the first quarter.

If the calculator shows no payback month, the extra traffic at your target never covers the monthly cost. Before dropping the plan, check whether a higher conversion rate, a higher order value or a lower cost would change that; the answer tells you whether the problem is the traffic or what happens after the visit.

The model leaves out a few things on purpose: revenue from search visits that convert later on another channel, brand searches that grow as more people see you, and traffic that would have grown anyway. Count them as upside, not as part of the plan.