Google Ads ROI Calculator
Enter your budget, industry, and customer value to instantly estimate your clicks, leads, revenue, and return on ad spend.
Based on 2025 Google Ads benchmarks across 13 industries · Updated monthly
Avg CPC for your industry: $6.5
Projected Monthly ROI
+454%
Estimated profit: $22.7K on a $5.0K budget
Est. Monthly Clicks
769
@ $6.5 avg CPC
Est. Monthly Leads
69
9.0% conv. rate
Est. New Customers
14
20% close rate
Est. Monthly Revenue
$27.7K
@ $2.0K/customer
Cost Per Lead (CPL)
$72
your blended CPL
Return on Ad Spend
5.5x
ROAS
Estimates based on 2025 industry average CPCs and conversion rates. Actual results vary based on campaign quality, competition, and landing page performance.
Get a Free Google Ads Audit — See Your Real Numbers →How This Calculator Works
Industry Avg CPC
We use verified 2025 average cost-per-click benchmarks for 13 major industries to estimate how many clicks your budget buys.
Conversion Rate
Industry-average landing page conversion rates estimate how many of those clicks become leads or inquiries.
Your Business Math
Your close rate and customer value turn leads into projected revenue, profit, and ROI specific to your business.
Google Ads ROI: Frequently Asked Questions
How accurate is this Google Ads ROI calculator?
This calculator uses 2025 industry-average CPC and conversion rate benchmarks to generate realistic projections. Actual results vary based on campaign quality, ad copy, landing page performance, competition, and geographic targeting. A well-optimized campaign managed by experienced Google Ads specialists can significantly outperform these averages — which is why we recommend getting a free audit alongside using this tool.
What is a good ROAS for Google Ads?
A good ROAS (Return on Ad Spend) for Google Ads typically starts at 2x–3x for most service businesses, meaning you generate $2–3 in revenue for every $1 spent on ads. For ecommerce, 4x–8x is common for well-run campaigns. For high-ticket services (legal, healthcare, home services), ROAS of 5x–20x is achievable because the customer value is high relative to CPC. The key metric isn't ROAS in isolation — it's whether the revenue generated exceeds your total costs including ad spend, management fees, and cost of goods.
What is a good cost per lead (CPL) for Google Ads?
A good CPL depends entirely on your customer lifetime value. A home services business with a $500 average job can sustain a $40–60 CPL. A law firm with a $10,000+ case value can sustain a $200–400 CPL. Rule of thumb: your acceptable CPL = (average customer value × close rate from lead). If your customer value is $2,000 and you close 20% of leads, your maximum profitable CPL is $400.
How much should I spend on Google Ads?
Most service businesses need a minimum of $1,500–3,000/month in ad spend to generate meaningful data and results. High-competition industries (legal, insurance, finance) require $5,000–20,000+/month to compete. Start with enough budget to generate at least 100–200 clicks per month in your target market — that's the minimum needed to make data-driven optimization decisions.
Should I manage Google Ads myself or hire an agency?
Google Ads self-management can work for simple campaigns, but most businesses find that a certified Google Ads agency generates significantly better results — typically 30–60% lower cost per lead and 2–4x better ROAS — because of campaign structure expertise, continuous optimization, Quality Score management, and access to advanced bidding strategies. The management fee (typically 15–20% of ad spend) usually pays for itself within the first 30–60 days.
Want to See Your Real Numbers?
This calculator uses industry averages. A free Google Ads audit from Woofer Digital shows you exactly what your specific account, keywords, and market can achieve — with real data, not estimates.
Get My Free Google Ads Audit →