Free calculator

Google Ads ROI calculator

Enter Google Ads spend, attributed revenue, and optional product costs to estimate ROI and whether the budget is buying profit — not just clicks.

Google Ads ROI

Plan Google Ads budget with CPC, conversion rate, AOV, and margin. Free Google Ads ROI / PPC budget calculator.

Monthly budget

Avg CPC ($)

Conversion rate (%)

AOV ($)

Gross margin (%)

Clicks

3333

Conversions

83.3

Revenue

$5,833.33

Return on Ad Spend

1.17×

Net after ads

$-2,666.67

At this funnel, expected Return on Ad Spend is 1.17× and net contribution after ads is $-2,666.67. Upload Profit on Ad Spend values so Smart Bidding trains on profit, not revenue alone.

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ROI vs Return on Ad Spend for Google Ads

ROI typically means (return − cost) ÷ cost. For ads, “return” should be profit when possible: (gross profit − ad spend) ÷ ad spend. Return on Ad Spend uses revenue in the numerator and ignores COGS.

Budget decisions improve when you convert Return on Ad Spend ambitions into profit ROI and break-even floors by margin band.

Revenue ROI-style Return on Ad Spend = revenue ÷ spend
Profit ROI ≈ (gross profit − spend) ÷ spend
Upload profit values for Smart Bidding alignment

Planning budget from ROI

If profit ROI is negative at current CPC and CVR, more budget amplifies losses. Fix feed quality, labels, and COGS signals first — then scale campaigns that clear Profit on Ad Spend targets.

Frequently asked questions

What is Google Ads ROI?

Google Ads ROI measures return relative to ad cost. Prefer profit-based ROI (profit after ads ÷ ad spend) over revenue-only Return on Ad Spend when judging whether PPC is working.

How do you calculate Google Ads ROI?

For profit ROI: subtract COGS from attributed revenue to get gross profit, subtract ad spend, then divide by ad spend. Example: $10,000 revenue, $6,000 COGS, $2,000 spend → $2,000 after ads → ROI = 100%.

What is a good Google Ads ROI?

Positive profit ROI is the floor. Many brands target a buffer above break-even Profit on Ad Spend so contribution covers overhead. Compare to your margin structure, not a generic “good Return on Ad Spend” chart.