Türk SEM

ROI Calculator: Return on Digital Investment

Work out the return on investment of eight digital marketing channels separately: SEO, Google Ads, social media, email, content, influencer, video and affiliate. Put your budget decisions on a foundation of data.

What Is ROI?

ROI, return on investment, is the ratio that shows what a piece of spending has actually earned the business in net terms. The formula is simple: ROI = (Return − Investment) / Investment × 100. Spend ₺10,000 and generate ₺25,000 in return and your ROI is 150%: you've made your money back and added one and a half times the investment on top.

Türk SEM has been managing digital marketing budgets since 1999, and we know every budget conversation opens with the same question: “What will this spending earn us?” We designed the tools on this page to give a first answer to that question within minutes. Every channel has its own economics: with ads you buy clicks, with SEO you build an asset, with email you talk to a list you own. That's why, instead of one generic calculator, we built a separate tool for each of the eight channels, working from its own inputs.

Terazide bir kefede paralar, diğerinde yükselen büyüme oku: yatırım ve getiri dengesi
Huninin geniş ağzına giren küçük paralar ve dar ucundan çıkan yükseliş oklu büyük para: pazarlama hunisi

How Do the Tools Work?

Every calculator follows the same backbone: you enter a handful of values describing the channel's cost and funnel (budget, traffic or reach, conversion rate, average order value), and the tool converts that chain into revenue and calculates ROI instantly. The results card shows more than the ROI percentage; it surfaces the channel's critical intermediate metrics too: ROAS and break-even CPC for Google Ads, customer acquisition cost (CAC) for SEO, a 12-month cumulative projection for content marketing, effective CPM for an influencer campaign.

The calculations run entirely in your browser; no data is sent to a server. The results are estimates based on the assumptions you enter, and the healthiest way to use them is to take your conversion rate and order value from your own analytics.

ROI Calculators for 8 Channels

SEO ROI

How growth in organic traffic converts into customers and revenue; CAC and annual net gain.

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Google Ads ROI

ROAS, ROI and break-even CPC from your budget, CPC and conversions.

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Social Media ROI

The revenue social traffic brings, set against management and ad costs.

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Email ROI

Campaign returns from list size, open and click rates; revenue per subscriber.

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Content Marketing ROI

The cumulative return on content investment; a 12-month projection.

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Influencer ROI

Reach, clicks and sales against campaign budget; effective CPM.

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Video Marketing ROI

The revenue views bring, set against production and distribution cost; CPV.

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Affiliate ROI

Affiliate revenue against commission and platform costs.

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What Do We Measure in Each Channel?

Bought traffic (Google Ads, paid social, influencer): the moment spending stops, the traffic stops. ROI is immediate and clean, and the levers of optimization are cost per click and conversion rate. Built assets (SEO, content, video): the pages and videos you produce keep generating revenue for months. A single month's ROI misleads; the cumulative window is the right measure. Owned channels (email, an affiliate network): the cost of reach is low, and the return grows with the quality of your list and your partnerships. A healthy marketing mix balances all three groups, and our tools measure each one with metrics suited to its nature.

Üç saksıda farklı hızda büyüyen bitkiler: hızlı çiçek, yavaş güçlü fidan ve sarmaşık; üç kanal grubunun doğası

Frequently Asked Questions

What is ROI?

ROI (return on investment) is the ratio showing how much net gain an investment produces against its cost. In marketing it measures how much comes back for every unit of currency spent on a channel.

How is ROI calculated?

ROI = (Return - Investment) / Investment × 100. If you generated ₺25,000 from a ₺10,000 investment, your ROI is 150%: you've recovered your investment and added one and a half times that on top.

What's the difference between ROI and ROAS?

ROAS measures revenue against ad spend alone: Revenue / Ad Spend. ROI takes every cost into account (agency, content, tools) and looks at net gain. A 4x ROAS can correspond to a much lower ROI once the other costs are added.

What counts as a good ROI?

There's no single right answer: your profit margin, sector and channel decide. The practical threshold is this: if ROI is positive, the investment is paying for itself. Comparisons should be made between the channels of the same business, not against another sector's figures.

What does a negative ROI mean?

It means the channel costs more than the revenue it produces. That isn't always a signal to shut the channel down: improvements to conversion rate, targeting or bidding can change the picture, and in cumulative channels like SEO and content the early months are negative by nature.

Why does SEO ROI take time?

SEO is a cumulative channel: content and authority strengthen over time, so in the early months cost can run ahead of return. Assessing it over a 6 to 12 month window gives a healthier answer than a single month's snapshot.