Facebook Ads vs Google Ads deliver different types of ROI depending on your industry and buying cycle. Google Ads wins for high-intent searches where users are ready to buy, producing an average 200% ROAS across industries. Facebook Ads outperform for awareness-driven campaigns and products with visual appeal, averaging 152% ROAS with significantly lower cost per thousand impressions.
How Each Platform Generates Revenue
The core difference between Facebook Ads and Google Ads comes down to intent vs. discovery. Google Ads intercepts people actively searching for your product or service. Facebook Ads places your offer in front of people who match your ideal customer profile but aren’t actively looking.
This distinction shapes every downstream metric. Google Search Ads convert at 3.75% on average because the user already expressed intent by typing a query. Facebook Ads convert at 1.11% on average, but reach far more people at a fraction of the cost per impression.
Google Ads: Capture Existing Demand
Google Ads operates across Search, Display, Shopping and YouTube. The Search Network is where most ROI conversations start. When someone types “best PPC management agency near me,” they’re signaling purchase intent. Your ad appears at the exact moment they’re ready to act.
Google’s 2025 benchmarks show Search Ads delivering a median ROAS of 200% across all industries. For ecommerce, that number climbs to 400% or higher when Shopping campaigns are properly optimized. The tradeoff is cost. Average CPC on the Search Network sits at $2.69, with competitive verticals like legal services reaching $6 to $9 per click.
Facebook Ads: Create New Demand
Facebook (Meta) Ads work across Facebook, Instagram, Messenger and the Audience Network. The platform’s strength is audience targeting. You build audiences based on demographics, interests, behaviors and lookalike modeling from your existing customer data.
Average CPC on Facebook sits at $0.44 to $0.97, making it accessible for smaller budgets. CPMs (cost per 1,000 impressions) average $7.19, compared to Google Display’s $3.12. The higher CPM reflects Facebook’s superior targeting precision and higher engagement rates on in-feed placements.
Facebook Ads vs Google Ads: Head-to-Head Comparison
| Metric | Google Ads (Search) | Facebook Ads |
|---|---|---|
| Average CPC | $2.69 | $0.44 – $0.97 |
| Average CTR | 6.11% | 1.49% |
| Average Conversion Rate | 3.75% | 1.11% |
| Average ROAS | 200% | 152% |
| Targeting Method | Keyword and intent-based | Demographic and behavior-based |
| Best For | High-intent searches and lead gen | Awareness, retargeting and visual products |
| Minimum Viable Budget | $1,000 – $2,000/month | $500 – $1,000/month |
| Learning Phase | 2 – 4 weeks | 3 – 6 weeks |
| Ad Formats | Text, Shopping, Display, Video | Image, Video, Carousel, Stories, Reels |
| Audience Reach | 8.5 billion searches/day | 3.07 billion monthly active users |
Which Industries Perform Better on Each Platform
Your industry determines which platform delivers stronger returns. The data tells a clear story when you break performance down by vertical.
Google Ads Wins for High-Intent Verticals
Service-based businesses with urgent or research-heavy buying cycles dominate on Google Ads. Legal services see conversion rates of 6.98% on Search. Dental and medical practices convert at 5.1%. Home services like plumbing and HVAC hit 4.8%. These verticals benefit from users searching with phrases like “emergency plumber near me” or “family lawyer consultation” where Google Ads captures intent that even SEO can’t always reach fast enough.
B2B companies also lean toward Google Ads. The longer sales cycle means capturing someone at the research stage through Search Ads builds pipeline value that compounds over time. Average B2B cost per lead on Google Ads ranges from $35 to $65, but lead quality tends to be higher than social channels.
Facebook Ads Wins for Visual and Impulse Verticals
Ecommerce brands selling products under $100, DTC (direct-to-consumer) brands and lifestyle products thrive on Facebook and Instagram. The visual ad formats drive impulse purchases that Search Ads can’t replicate.
Fashion and apparel brands see average ROAS of 300% to 500% on Meta platforms. Fitness and wellness brands convert at 2.3% on Facebook, nearly double the cross-industry average. Food and beverage brands leverage Instagram Stories and Reels to drive trial purchases with CPAs under $15.
Local businesses with broad appeal also perform well. Restaurants, gyms and retail stores use Facebook’s location targeting to reach people within a specific radius, often achieving CPMs under $5 for local campaigns.
Cost Breakdown: What You Actually Pay
Raw CPC numbers don’t tell the full story. You need to calculate cost per acquisition (CPA) and lifetime value (LTV) to compare ROI accurately.
Google Ads Cost Structure
Google charges on a CPC or CPM basis depending on the campaign type. Search campaigns use CPC bidding where you pay only when someone clicks. Average CPA on Google Search Ads is $48.96 across all industries. Ecommerce sits lower at $38.40. Legal and financial services climb to $75 to $135 per conversion.
The hidden cost is management complexity. Google Ads requires ongoing keyword research, negative keyword management, bid adjustments and quality score optimization. Most businesses allocate 15% to 20% of ad spend for professional PPC management to maintain performance.
Facebook Ads Cost Structure
Facebook uses an auction system with CPC, CPM and CPA bidding options. Average CPA across all industries is $18.68, roughly 60% lower than Google Search. But this number is skewed by ecommerce brands running high-volume, low-ticket campaigns.
For lead generation, Facebook CPAs range from $15 to $55 depending on vertical and offer quality. The platform rewards creative quality heavily. Ads with strong video or carousel creative can see CPAs 40% to 60% lower than static image ads in the same audience.
Building a Dual-Platform Strategy
The Facebook Ads vs Google Ads debate creates a false binary. The strongest results come from running both platforms together with clear roles for each.
The Full-Funnel Framework
Structure your budget allocation based on where each platform performs best in the customer journey:
- Top of funnel (awareness): Allocate 30% to 40% of budget to Facebook and Instagram. Use video ads and carousel formats to introduce your brand. Target lookalike audiences built from your best customers.
- Middle of funnel (consideration): Split budget between Google Search (branded and competitor terms) and Facebook retargeting. Retarget website visitors who viewed key pages but didn’t convert.
- Bottom of funnel (conversion): Allocate 40% to 50% to Google Search Ads targeting high-intent keywords. Supplement with Facebook dynamic remarketing showing specific products or services the user viewed.
Cross-Platform Attribution
Running both platforms means you need proper attribution to avoid double-counting conversions. Implement UTM parameters on every ad URL. Use Google Analytics 4’s data-driven attribution model, which distributes credit across touchpoints rather than giving all credit to the last click.
Facebook’s Conversions API (CAPI) is essential for accurate tracking in a post-iOS 14.5 world. Server-side tracking recovers 20% to 30% of conversions that browser-based pixels miss. Without CAPI, your Facebook ROAS reporting will appear 25% to 40% lower than reality.
How to Decide Where to Start
If you’re working with a limited budget and need leads fast, start with Google Ads. The intent-based model produces faster returns and a shorter path to ROI. A well-structured Search campaign can generate qualified leads within the first two weeks.
If you’re building a brand, launching a new product or selling visual products online, start with Facebook Ads. The lower entry cost and powerful audience targeting let you test creative and messaging before scaling. Check our social media advertising guide for platform-specific setup instructions.
For businesses with budgets above $3,000 per month, run both from day one. The compounding effect of capturing intent on Google while building awareness on Facebook accelerates growth faster than either platform alone.
Measuring What Matters
Stop comparing vanity metrics across platforms. CTR on Google Search is naturally higher (6.11%) than Facebook (1.49%) because the user is already searching. That comparison is meaningless without context.
Focus on these metrics instead:
- Cost per qualified lead: Not just any conversion but leads that your sales team can actually close
- Customer acquisition cost (CAC): Total ad spend divided by new customers acquired, including management fees
- ROAS by campaign: Break this down by campaign type, not just platform averages
- LTV:CAC ratio: A healthy business needs this ratio above 3:1, meaning each customer generates 3x what you paid to acquire them
Track these numbers monthly. If one platform consistently underperforms, shift budget to the winner. If both perform, scale the one with the lower marginal CAC first.
Not sure where your current campaigns stand? Request a free audit and we’ll benchmark your performance against industry standards across both platforms.
Frequently Asked Questions
Which is cheaper, Facebook Ads or Google Ads?
Facebook Ads have a lower average CPC ($0.44 to $0.97) compared to Google Ads ($2.69 on Search). However, cost per click alone doesn’t determine ROI. Google’s higher CPC comes with higher conversion rates (3.75% vs 1.11%), so the cost per actual customer acquisition can be comparable. Calculate your CPA and LTV:CAC ratio on each platform to find which delivers more value per dollar spent.
Can I run Facebook Ads and Google Ads at the same time?
Running both platforms simultaneously is the recommended approach for businesses spending $3,000 or more per month. Use Google Ads to capture people actively searching for your product or service and Facebook Ads to build awareness and retarget visitors. A dual-platform strategy reduces overall CPA by 15% to 25% compared to single-platform campaigns because you cover both intent-based and discovery-based touchpoints.
What budget do I need to start with paid ads?
Google Ads needs a minimum of $1,000 to $2,000 per month to collect enough data for meaningful optimization within 30 to 60 days. Facebook Ads can start producing results at $500 to $1,000 per month. Both platforms require roughly 50 conversions per month per campaign to exit the learning phase. Below that threshold, the algorithms lack enough data to optimize delivery effectively.
How long does it take to see ROI from paid advertising?
Google Ads campaigns typically show measurable ROI within 30 to 90 days with proper structure and targeting. Facebook Ads take longer, usually 60 to 120 days, because the algorithm needs time to learn which audience segments convert best. Plan for a 2 to 4 week testing phase on either platform where your CPA will be higher than your eventual steady-state performance.
Related reading: how to reduce your Google Ads CPC
Related: PPC guide and PPC FAQ
Related: social media ad management
Related: PPC management services
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