SEO ROI Calculator

Free tool · Sourced CTR curves, ramp to break even and Google Ads equivalence

An SEO ROI calculator that shows you the CTR curve, the ramp and the break even month

Every SEO ROI calculator on page one belongs to an agency, and almost all of them ask you to guess the one number that decides the answer: how much traffic a ranking will actually produce. This one does not. Pick a target position and it applies a published click through rate curve, shows you that curve with its source, and lets you take the AI Overview reduction off the top. It then ramps the forecast month by month so you can see when cumulative return crosses cumulative spend, prices the same clicks in Google Ads using paid benchmarks from 13,474 campaigns, and measures the ROI you have already earned against nineteen industry figures. No email gate, nothing stored.

Verified 15 Sep 2026
2 sourced CTR curves
AI Overview adjustment
Break even month
SEO vs Google Ads value
19 industry ROI benchmarks
Sets the paid search benchmark used in the Google Ads comparison.
Symbol only. The benchmarks are US dollar figures, so convert before comparing.




What are you selling?

Add up the monthly volume of the keywords you are targeting on one page or one cluster.
Be honest. Most forecasts fail because they assume position 1 on every keyword.
Two published curves. The table under the results shows the one in use.

Form fills, calls and chats as a share of organic visitors.
How many enquiries your sales process actually closes.
First year value, not lifetime value. Lifetime value flatters a forecast and invites pushback.
Retainer, content production, links, tools and developer time. Leave at zero to see revenue only.

Enter your search volume and what a visitor is worth. Results update as you type.

How do you calculate SEO ROI?

Subtract what SEO cost you from what it returned, divide by what it cost, and multiply by a hundred. The arithmetic takes five seconds. Everything difficult about SEO ROI is in deciding what counts as a return and how far into the future you are allowed to count it.

SEO ROI = (revenue from organic search - cost of SEO) / cost of SEO x 100

Return 86,000 on 30,000 of spend and the ROI is 187%. The same campaign measured at month six instead of month twelve would have shown a loss, and the same campaign counting lifetime value instead of first year value might have shown 600%. Neither number is dishonest. They just answer different questions, which is why this page gives you both a forecast view and a backward looking view rather than one blended figure.

What is the SEO ROI formula?

There are three versions in common use and they are not interchangeable.

VersionFormulaWhen to use it
Revenue ROI(organic revenue – SEO cost) / SEO cost x 100Reporting to a finance team. The most conservative and the hardest to argue with.
Total SEO value ROI((organic clicks x paid CPC) + organic revenue – SEO cost) / SEO cost x 100Showing what the channel is worth when you also buy paid search. The Search Engine Land method.
Forecast ROI(projected revenue – projected cost) / projected cost x 100Pitching a budget. Only credible if the traffic projection comes from a published CTR curve rather than a guess.

What should be included in SEO investment?

Everything you would stop paying for if you stopped doing SEO. In practice that means the retainer or in house salary, content production including writers, editors and design, link acquisition and digital PR, SEO software, and the developer time spent implementing technical fixes. Leave out hosting, general brand marketing, and anything aimed at customers you already have.

Leaving developer time out is the most common omission and it is usually the largest single line on a technical project. If you cannot get a real figure, take the hours and apply an internal rate. A slightly wrong number in the calculation is better than a zero.

What is the difference between SEO ROI and ROAS?

ROAS divides revenue by ad spend and produces a ratio, so 4x means four units of revenue for every one spent. ROI subtracts the cost first and produces a percentage, so the same campaign is 300% ROI. ROAS is a media metric and works well for paid because the spend and the return happen in the same week. SEO spend and SEO return are separated by months, which is why ROI over a stated period, with a break even month next to it, is the more honest framing. If you want the paid side of the comparison, the ROAS calculator handles break even ROAS and profit aware mode.

How much traffic will I get if I rank number 1 on Google?

Multiply the monthly search volume by the click through rate for that position. The catch is that there is no single agreed click through rate for position 1, and the honest range between the two most cited studies is wide enough to change a business case.

PositionFirst Page Sage, 2026Backlinko, 2025
139.8%27.6%
218.7%15.5%
310.2%11.0%
47.2%8.0%
55.1%6.5%
64.4%5.2%
73.0%4.5%
82.1%4.0%
91.9%3.5%
101.6%2.7%

First Page Sage is a meta analysis last updated 28 May 2025. Backlinko analysed 4 million results across 12.1 million queries and updated on 16 April 2025. The two agree closely from position 3 down and disagree sharply at the top, where First Page Sage puts position 1 at nearly 40% and Backlinko at under 28%. Use Backlinko when you are building a case someone will attack. The calculator lets you switch between them and shows which one produced the number.

What is the click through rate for position 1 on Google?

Between 27.6% and 39.8% on a clean results page, depending on which study you trust. A featured snippet at position 1 pulls about 42.9% according to First Page Sage. Backlinko also found that moving from position 2 to position 1 lifts click through rate by 74.5% in relative terms, which is the single most useful number in the whole dataset when you are deciding whether one more push is worth it. Page two and beyond collects about 0.63% of clicks in total, so the practical answer for anything below position 10 is close to zero.

Is SEO still worth it with AI Overviews?

Yes, but the forecast has to be adjusted rather than assumed away. An Ahrefs study of 300,000 keywords in February 2026 found click through rate fell 58% at position 1, 50.8% at position 2 and 46.4% at position 3 when an AI Overview was present. Seer Interactive reports AI Overviews appearing on about 36% of informational queries and 95.4% of comparison queries, which means the effect lands hardest on exactly the top of funnel content most SEO programmes produce.

Two things cut the other way. Seer also found that pages cited inside an AI Overview earned roughly 120% more clicks per impression, so being in the Overview is now its own objective. And commercial and transactional queries, which is where revenue actually comes from, trigger Overviews far less often than informational ones. The practical response is to tick the AI Overview box on informational keyword sets and leave it off for buying intent keywords, rather than applying one haircut to everything.

How long does it take to see ROI from SEO?

Three to six months for the first movement, six to twelve months for meaningful traffic, and year two or three for peak return. That range is consistent across every practitioner survey that has been published, which is unusual for an SEO question.

SourceFinding
Ahrefs poll, 3,680 respondentsTypically 3 to 6 months for first results
Morningscore survey, 75 practitioners, 202667.2% see first results in 2 to 4 months; 82% expect a traffic increase by month 6; full results 12 to 24 months
Google, Maile OhyeFour months to a year to see real effect
First Page Sage, 19 industriesBreak even between 5 months (construction) and 14 months (legal services)
Ahrefs ranking study, 2 million keywordsOnly 5.7% of new pages reach the top 10 inside a year; top 10 pages average over 2 years old

When does SEO break even?

When cumulative return overtakes cumulative spend, which is later than most people expect because the spend starts at full rate in month one and the return starts near zero. That is the whole reason tab two exists. A campaign returning 9,100 a month at steady state against 2,500 a month of cost looks like a 264% ROI on a single month view and looks like a loss for the first five or six months on a cumulative view. Both are true. The cumulative view is the one that matches the client bank account.

How long does SEO take to work on a new site?

Considerably longer, and the ramp profile in the calculator reflects that. The Ahrefs study of 2 million keywords found that only 5.7% of newly published pages reached the top 10 within a year, falling to 0.3% for high volume keywords, and that the pages which did make it took between 61 and 182 days. Top 10 pages average over two years old and position 1 pages nearly three. If you are forecasting for a domain registered this year, select the new site ramp and extend the horizon to 36 months before you judge the business case.

What is a good ROI for SEO?

Higher than almost any other marketing channel, which is exactly why the numbers deserve scepticism. First Page Sage, working from campaigns run between Q1 2021 and Q3 2025 and reporting three year averages, puts the range from 317% for ecommerce up to 1,389% for real estate. Those are real figures from a real dataset, but they describe thought leadership content SEO run over three years, not a six month technical engagement.

What is the average ROI of SEO by industry?

The full nineteen industry table sits in tab four of the calculator so you can compare your own result against your own row. Selected figures, with months to break even in brackets: real estate 1,389% (10), financial services 1,031% (9), manufacturing 813% (9), B2B SaaS 702% (7), construction 681% (5), HVAC services 678% (6), legal services 526% (14), ecommerce 317% (9).

The far more useful split in the same report is by type of work. Technical SEO returns 117% and breaks even in about 6 months. Basic content marketing returns 16% and takes 15 months. Thought leadership content returns 748% and breaks even in 9 months. A blended SEO ROI number hides which of those three you are actually buying, and most disappointing SEO programmes turn out to have been buying the middle one.

Does SEO have a better ROI than Google Ads?

Usually, on cost per acquisition, and usually not on speed or control. Roughly 75% of clicks on a results page go to organic listings and 25% to paid according to WordStream. Terakeet puts organic customer acquisition at about 87% less than paid on average. First Page Sage reports an SEO conversion rate of 2.4% against 1.3% for PPC across all industries.

None of that makes paid search a worse investment. Paid delivers traffic the day you switch it on, lets you test offers and landing pages in a week, and can be turned off. SEO compounds and keeps delivering after you stop paying, but it cannot be switched on in time for a quarter that is already behind. The teams that do best run both and use the paid data to decide which organic pages are worth building, which is what tab three is for.

How do you calculate the value of organic traffic?

Multiply your organic clicks by what the same clicks would cost in Google Ads. It is the fastest way to put a number on traffic that has no direct revenue attached, and it is the argument that lands with people who think in media budgets.

Equivalent ad spend = organic clicks x average cost per click

Four thousand two hundred organic clicks a month at the 5.42 all industry average cost per click is about 22,764 a month of media you did not have to buy, or 273,168 a year. Against a 2,500 a month retainer that is a value multiple of roughly 9x. Semrush makes the same point at a scale that is hard to argue with: Canva’s 19.8 million monthly US organic visits equate to roughly 26.4 million a month in equivalent paid spend.

Why does the cost per click method have a paradox in it?

Because it makes your SEO look worse when your paid team gets better. Search Engine Land raised this and it is worth stating plainly rather than hiding. If you improve Quality Score and your average cost per click drops from 5.42 to 3.80, the calculated value of exactly the same organic traffic falls by 30% overnight even though nothing about the organic traffic changed.

So use the method to communicate scale, not to set the ROI number. The revenue based ROI in tab four is the figure that goes in the report. The equivalent ad spend is the sentence that makes a finance director look up.

How do you forecast SEO traffic and revenue for a client or a board?

Show three numbers instead of one, name the source of every assumption, and put a re-forecast date in the calendar. A single confident projection implies a certainty that does not exist and gets picked apart the first month it misses.

  1. Total the monthly search volume for the keyword set that one page or one cluster can realistically win.
  2. Pick a target position you would actually bet on, then build the conservative case two positions below it.
  3. Apply a published CTR curve and state which one. Apply the AI Overview reduction on informational keyword sets.
  4. Convert clicks to revenue with your own conversion rate and first year customer value, not lifetime value.
  5. Ramp the result across 12 to 24 months and show the break even month, not just the annual total.
  6. Put the conservative, expected and optimistic cases in one table so the reader can see the range you are working in.
  7. Re-forecast every quarter against real Search Console data and replace the published curve with your own as soon as you have 12 to 16 months of it.

How accurate are SEO ROI projections?

Accurate enough to plan with, not accurate enough to promise. Shortlist tested a regression forecasting model against what actually happened and found it missed organic click through rate by between 0.6 and 2.6 percentage points within two months. On a large keyword set that is a meaningful swing in revenue. The Animalz team describe their own forecasting tool as a compass rather than a GPS, which is the right expectation to set with a client in the first meeting rather than the fourth.

The biggest single source of error is not the CTR curve. It is the timeline, because that is the assumption people argue about hardest and evidence about least.

What if I do not know my conversion rate?

Use a benchmark to start and replace it within a month. The industry selector at the top of the calculator carries the paid search conversion rate for twenty four industries from WordStream’s 2026 benchmarks across 13,474 US campaigns, which gives you a defensible starting point. Organic conversion rates usually run higher than paid for the same business, so a paid benchmark is a conservative stand in.

If you sell services rather than products and have no conversion value at all, work backwards: take your average deal value, multiply by your close rate, and that is what a qualified enquiry is worth. It is an estimate, but an estimate with a stated method beats leaving the field blank and reporting traffic.

How do you calculate SEO ROI for lead generation compared with ecommerce?

The difference is the number of steps between a click and money. Ecommerce has one, so conversion rate times average order value gives you the value of a visit directly. Lead generation has two, because a form fill is not revenue until sales closes it.

EcommerceLead generation
Value per visitconversion rate x average order valuevisitor to lead rate x lead to customer rate x deal value
Where the data livesGA4 ecommerce reportsGA4 for leads, CRM for the close rate and deal value
Most common errorUsing revenue instead of contribution margin, so shipping and cost of goods are ignoredCounting leads as revenue, which overstates the return by the whole sales funnel
Reported ROI317% three year average526% to 1,389% depending on industry

The gap in those last two rows is not because lead generation SEO is better. It is because a legal or real estate enquiry is worth hundreds or thousands and a first ecommerce order is worth tens. Higher deal values make the same traffic look more valuable, which is why comparing your ROI against your own industry row matters more than comparing against the headline number.

How do I improve SEO ROI?

In rough order of how quickly it moves the number for a site that already has traffic.

  1. Improve the conversion rate before chasing more traffic. Going from 2.1% to 3.0% lifts revenue by 43% with no new rankings and no new content.
  2. Push existing positions 4 to 8 up rather than starting new pages. The CTR curve is steepest at the top, so moving from 5 to 2 roughly triples the clicks from the same keyword.
  3. Target buying intent keywords where AI Overviews appear less often and the click is worth more.
  4. Fix technical debt first if crawling or indexing is broken. It returns less than content on paper, at 117%, but it breaks even in about 6 months and everything else depends on it.
  5. Kill or consolidate pages that have had 12 months and no impressions. They cost money to maintain and return nothing.
  6. Assign conversion values in GA4 so the return is measured rather than estimated. A great deal of SEO looks like it has no ROI purely because nobody configured the key events.
  7. Check your attribution. A Groupon experiment found that upwards of 60% of what analytics reports as direct traffic is actually organic, which means a real programme can look like a failing one.

How much does SEO cost per month?

Three separate provider surveys put most of the market between 500 and 5,000 a month, with agencies charging roughly 30% more than freelancers.

SurveySampleFinding
Ahrefs, 2024439 providersAverage 2,917 a month; most common band 501 to 1,000; 63% between 500 and 5,000; agencies 3,209 against freelancers 1,348; local SEO average 1,557
Backlinko, 2025300 plus professionalsMost common band 1,001 to 2,500 a month; hourly 50 to 100; agencies about 30% above freelancers
SE Ranking, 2025260 agencies64% charge below 1,000 a month; 53% prefer retainers

What matters for the ROI calculation is not the retainer but the total. A 1,500 retainer with 2,000 of content production and 800 of tooling behind it is a 4,300 monthly investment, and reporting ROI against the 1,500 is the most common way an SEO business case quietly overstates itself.

SEO ROI calculator FAQs

What is ROI in SEO?

Return on investment from organic search: what organic search earned you, minus what SEO cost you, divided by what it cost, as a percentage. Return 86,000 from 30,000 of spend and the ROI is 187%. The number only means something when you also state the period it covers.

How do you calculate SEO ROI?

Subtract the cost of SEO from the revenue attributed to organic search, divide by the cost, multiply by 100. For a forecast, work out expected clicks from search volume and a published click through rate curve, convert clicks to revenue using your conversion rate and deal value, then apply the same formula.

What is a good ROI for SEO?

First Page Sage reports three year averages from 317% for ecommerce up to 1,389% for real estate across nineteen industries. By type of work the same report shows technical SEO at 117%, basic content marketing at 16% and thought leadership content at 748%. Compare against your own industry row rather than the headline figure.

How long does it take to see ROI from SEO?

Three to six months for first movement and six to twelve months for meaningful traffic, with returns peaking in year two or three. First Page Sage puts break even between 5 months for construction and 14 months for legal services. New domains take considerably longer.

What is the click through rate for position 1 on Google?

Between 27.6% and 39.8% depending on the study. Backlinko, from 4 million results, reports 27.6%. First Page Sage reports 39.8%. A featured snippet at position 1 pulls about 42.9%. This calculator lets you pick either curve and shows which one produced your number.

How much traffic will I get if I rank number 1?

Monthly search volume multiplied by the position 1 click through rate. Twelve thousand monthly searches at the First Page Sage rate of 39.8% is about 4,776 clicks a month; at the Backlinko rate of 27.6% it is about 3,312. Use the lower figure when you are building a case someone will challenge.

How do AI Overviews affect SEO ROI?

An Ahrefs study of 300,000 keywords in February 2026 found click through rate fell 58% at position 1, 50.8% at position 2 and 46.4% at position 3 when an AI Overview was present. Overviews appear on about 36% of informational queries and 95.4% of comparison queries, so informational keyword sets need the adjustment and buying intent keywords usually do not.

How do you calculate the value of organic traffic?

Multiply organic clicks by the average cost per click you would pay for the same clicks in Google Ads. Four thousand two hundred clicks at 5.42 is about 22,764 a month of media you did not have to buy. Use it to show scale, not as the ROI figure itself.

What is the difference between SEO ROI and ROAS?

ROAS divides revenue by spend and gives a ratio, so 4x. ROI subtracts the cost first and gives a percentage, so the same campaign is 300%. ROAS works for paid because spend and return land in the same week. SEO spend and return are months apart, so ROI across a stated period with a break even month next to it is the fairer framing.

What should be included in SEO investment?

Retainer or in house salary, content production, link acquisition and digital PR, SEO software, and developer time for technical fixes. Leave out hosting, general brand spend and anything aimed at existing customers. Developer time is the line most often left out and usually the largest on a technical project.

How accurate are SEO ROI projections?

Useful for planning, not safe to promise. Shortlist tested a regression forecasting model and found it missed organic click through rate by 0.6 to 2.6 percentage points within two months. Show a conservative, expected and optimistic case, name every assumption, and re-forecast quarterly against real data.

Does SEO have a better ROI than Google Ads?

Usually on cost per acquisition, not on speed. About 75% of results page clicks go to organic and 25% to paid according to WordStream, and Terakeet puts organic acquisition at roughly 87% cheaper. Paid still wins on speed, testing and control, which is why most accounts should run both.

How much does SEO cost per month?

Ahrefs surveyed 439 providers and found an average of 2,917 a month with 63% between 500 and 5,000. Backlinko found 1,001 to 2,500 most common. SE Ranking found 64% of 260 agencies charging under 1,000. Include content, links and tools in your figure, not just the retainer.

Does this calculator store my numbers or need my email?

Neither. Everything runs in your browser, nothing is uploaded, stored or logged, and there is no sign up or email gate. Close the tab and the numbers are gone.

Want a forecast built on your keywords rather than a benchmark?

Send us your domain and we will pull your real Search Console click through rate curve, map the keyword set you could realistically win, and build the conservative, expected and optimistic cases against your own conversion data. If the maths does not support an SEO budget for your market, we will tell you that instead and point you at the paid route.

No obligation, no email gate on the tool either way.

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