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Measure return on ad spend and percentage ROI using attributed revenue and spend - ideal for quick pacing checks before deep attribution work.
Quick answer: Google Ads ROI Calculator
ROAS is revenue divided by spend; ROI is percent profit on spend after you net out costs.
Example: $5k spend, $18k attributed revenue → 3.6× ROAS; profit $13k → 260% ROI before COGS and refunds.
Calculations follow the documented formula on this page; rounding and input units can change the last digit-treat outputs as educational estimates unless you reconcile with source systems.
* This is an estimate. Actual amounts may vary slightly based on input assumptions.
Attribution windows and modeled conversions inflate ROAS - use this for directional pacing, then validate with incrementality tests or geo holdouts when budgets grow.
Measure return on ad spend and percentage ROI using attributed revenue and spend - ideal for quick pacing checks before deep attribution work.
Inputs on this page: Ad Spend (USD), Attributed Conversion Revenue (USD). Assumptions stay visible so you can reproduce the figure elsewhere.
Long-form walkthroughs that pair well with this calculator. When you need narrative context beyond the live fields, start here and return to the tool to plug in your own numbers.
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Continue in the Marketing category hub, the Marketing tools collection, or the glossary. Related calculators in this session: ROI Calculator Marketing, Conversion Rate Calculator, CPC Calculator, Affiliate Earnings Calculator, AdSense Revenue Calculator, AdSense Earnings Calculator.
The Formula
ROAS = Revenue / Spend; ROI% = ((Revenue − Spend) / Spend) × 100| This tool | ROAS = Revenue / Spend; ROI% = ((Revenue − Spend) / Spend) × 100 |
|---|---|
| Related intent: google ads roi calculator | See paired tools for google ads roi calculator-each page documents its own core relationship next to the live form. |
| Related intent: google ads roas calculator | See paired tools for google ads roas calculator-each page documents its own core relationship next to the live form. |
Core relationship for Google Ads ROI Calculator:
ROAS = Revenue / Spend; ROI% = ((Revenue − Spend) / Spend) × 100
Worked check: $5k spend, $18k attributed revenue → 3.6× ROAS; profit $13k → 260% ROI before COGS and refunds.
Keep the same assumptions and open a neighbor calculator when your question branches: ROI Calculator Marketing, Conversion Rate Calculator, CPC Calculator, Affiliate Earnings Calculator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
$5k spend, $18k attributed revenue → 3.6× ROAS; profit $13k → 260% ROI before COGS and refunds.
Re-enter the same numbers in the calculator above to confirm the page math matches the interactive result.
People who care about google ads roi calculator use Google Ads ROI Calculator as a planning sandbox: Blended account ROAS hides bleeding search terms - slice by campaign and SKU.
Instant response
Run Google Ads ROI Calculator in the browser and read the breakdown beside the form.
Transparent formula
The formula and worked example on this page match what the calculator uses.
Privacy friendly
No account required; inputs stay in your session unless you choose to share them.
Cross-device ready
Layout works on mobile, tablet, and desktop for the same field labels.
Official references for context. Calculator outputs are planning estimates—confirm material decisions with the primary authority or a qualified professional. See our methodology and editorial policy.
Reviewed July 18, 2026 · Content stamp 2026-07-18
Click a question to expand the answer.
Yes, the Google Ads ROI Calculator is completely free with no hidden limits.
Yes. All tools are optimized for desktop, tablet, and mobile devices.
Use the definition you manage against; many teams start with gross merchandise or collected revenue before COGS.
Import or model those revenues before pasting a blended number here.
ROAS is revenue divided by spend; ROI here is percent profit on spend - related but not identical.
ROAS is revenue divided by spend; ROI is percent profit on spend after you net out costs.
$5k spend, $18k attributed revenue → 3.6× ROAS; profit $13k → 260% ROI before COGS and refunds.
Blended account ROAS hides bleeding search terms - slice by campaign and SKU. New customer revenue deserves different targets than repeat purchases. Include returns and payment failures when judging true ROAS.
Same-category picks first, then high-intent neighbors that often answer the next calculation question.
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Reviewed by Toollabz Editorial
Product editor | Last reviewed July 18, 2026
See methodology and editorial policy.