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Free Google Ads ROI Calculator for Small Business (2026)

Use this Google Ads ROI calculator for small business planning before you increase paid search spend. Enter monthly ad budget, average CPC, landing page conversion rate, lead close rate, average sale value, and gross margin to estimate clicks, leads, customers, gross profit, and return on ad spend. The tool also works as a paid search ROI estimator and PPC profitability calculator. It is designed to help owners test assumptions, find weak points, and decide what to improve before scaling a campaign.

Last updated: May 2026

Best for

Businesses evaluating paid search performance, cost per click, lead quality, close rate, customer value, and gross profit.

Interactive calculator

Run the numbers

Inputs stay in your browser and the estimate updates instantly.

Media spend only. Add agency or management fees separately when reviewing total ROI.
$
Use recent account data or a conservative estimate for your market.
$
The percentage of clicks that become leads, calls, forms, or purchases.
%
The percentage of leads that become paying customers.
%
Use average first purchase, project size, or customer value for this campaign.
$
Revenue left after direct costs.
%

Your calculator values are processed in your browser. We do not store your entries.

Values are saved only in your browser.

Results

Estimated ROI

Calculating...

Gross profit minus ad spend, divided by ad spend.

Estimated clicks

Calculating...

Monthly clicks from the budget.

Estimated leads

Calculating...

Clicks multiplied by landing page conversion rate.

Estimated customers

Calculating...

Leads multiplied by close rate.

Estimated gross profit

Calculating...

Customer revenue after direct costs.

Estimate only. Not tax, legal, accounting, investment, or professional advice.

Visual estimate

Updates from the same numbers used in the calculator above.

Result explanation

How to read your estimate

Use the estimate as a decision aid, not as a promise of future results. Start by checking whether each input reflects recent business data, a conservative forecast, or a best-case assumption. The most useful calculator output is usually the one you can connect to actual records, such as tracked leads, closed sales, average order value, direct costs, gross margin, and monthly operating capacity. On this page, pay close attention to Estimated clicks, Estimated leads, Estimated customers, Estimated gross profit, Estimated ROI; those result cards are meant to show the relationship between cost, revenue, margin, and the business activity needed to make the decision work. If one number looks unrealistic, adjust the inputs before acting on the estimate. For example, a small change in close rate, average sale value, cost per click, page count, or gross margin can change the conclusion quickly. Use the related calculators below to cross-check the result from another angle, then turn the estimate into a short action plan with the checklist on this page. Revisit the numbers after you have better source data so the estimate becomes more useful over time.

Estimated clicks

Monthly clicks from the budget.

Estimated leads

Clicks multiplied by landing page conversion rate.

Estimated customers

Leads multiplied by close rate.

Estimated gross profit

Customer revenue after direct costs.

Estimated ROI

Gross profit minus ad spend, divided by ad spend.

Plain-English explanation

What this tool helps you decide

Google Ads ROI depends on more than the cost per click. You need to connect ad spend to clicks, landing page leads, sales close rate, average sale value, and gross margin.

This calculator helps you test campaign assumptions before you spend more money. If the numbers look weak, you can improve targeting, landing pages, sales follow-up, pricing, or offer quality before increasing the budget.

Example

Example Google Ads ROI

A company spends $2,500 per month, pays $5 per click, converts 6% of clicks into leads, closes 25% of leads, and earns $1,200 per customer at a 50% gross margin.

Result: The campaign estimates 500 clicks, 30 leads, 7.5 customers, $4,500 in gross profit, and about 80% ROI before management fees or overhead.

What to do next

Turn the estimate into a practical next step

  1. 1 Track calls, forms, booked appointments, and sales in one place.
  2. 2 Compare keyword groups by cost per qualified lead, not clicks alone.
  3. 3 Review landing page speed, clarity, proof, and call-to-action before increasing spend.
  4. 4 Ask sales staff to mark which leads were qualified and why deals were lost.
  5. 5 Separate branded search, competitor search, and service keywords in reporting.

FAQ

Common questions

What is a good Google Ads ROI for a small business?

A good ROI depends on margins, sales cycle, customer lifetime value, and cash flow. A campaign can look modest on first-sale profit but still be valuable if repeat purchases are common and measured.

Should agency fees be included?

For final ROI, yes. This calculator focuses on ad spend so you can understand campaign mechanics. Add management fees, creative costs, and landing page costs when making budget decisions.

Why does close rate matter so much?

Paid traffic only creates profit when leads turn into customers. Improving follow-up speed, qualification, and sales scripts can raise ROI without increasing ad spend.

Can I use this for other paid ads?

Yes, the same logic can help with Microsoft Ads, paid social, or local directory ads when you know spend, clicks, conversion rate, close rate, sale value, and margin.

Educational disclaimer

This tool is for general educational planning only. It is not tax, legal, accounting, investment, or financial advice. Review important business decisions with qualified professionals who understand your company and location.