Google Ads vs Facebook Ads: Which Gives Better ROI?

How Google Ads and Facebook Ads Actually Differ

Google Ads targets intent; Facebook Ads targets attention. Google shows your offer to people already searching for it, while Facebook interrupts a passive browsing session with a message designed to create desire or curiosity.

This single distinction explains almost every other difference between the two channels. On Google, the searcher has already defined the problem in their own words by typing a query. Your job is simply to be the most relevant, trustworthy answer on the page. There is no need to convince someone that they need a plumber when their pipe just burst; you only need to convince them that you are the right plumber.

On Facebook and Instagram, nobody typed 'I want a new skincare routine' into the app. They were looking at photos from a wedding or a friend's holiday. Your ad has to earn attention on its own merit, using a scroll-stopping visual, a compelling hook, or social proof, before it can even begin selling. This is why creative quality matters far more on Meta platforms than on Google Search, where the text ad copy and offer usually matter more than design.

Because of this, the two channels tend to perform best at different points in the funnel. Google Ads is generally stronger for bottom-of-funnel, high-intent conversions, while Facebook Ads is generally stronger for top-of-funnel awareness and mid-funnel consideration, though both platforms have expanded well beyond these original strengths.

Lead Generation: Search Intent vs Interruption

For most service businesses, Google Ads produces higher-intent leads that convert to sales faster, while Facebook Ads produces a larger volume of leads at a lower cost per lead that require more nurturing.

A homeowner searching 'emergency AC repair near me' on Google is often ready to book within the hour. A Facebook user who fills out a lead form after seeing an ad for the same AC company is usually earlier in the decision process, browsing options rather than actively hunting for a provider. Both leads have value, but they need different follow-up processes and different sales expectations.

In our experience managing lead-gen accounts across home services, legal, healthcare and B2B software, Google Search leads typically close at a meaningfully higher rate than Facebook lead-form leads, but Facebook leads often cost 30 to 60 percent less to generate. The right choice depends on whether your sales team has the capacity and process to work a higher volume of warmer-but-not-hot leads.

Ecommerce: Product Discovery vs Product Search

For ecommerce, Facebook and Instagram tend to excel at product discovery and impulse purchases, while Google Shopping and Search excel at capturing shoppers who already know what they want to buy.

A well-targeted Meta ad can introduce a new brand or product to someone who never knew it existed, using visually rich formats like Reels, carousels and Advantage+ shopping campaigns. This works especially well for fashion, beauty, home goods, and other visually driven, lower-consideration categories where seeing the product is often enough to trigger a purchase.

Google Shopping, on the other hand, wins the moment a customer already knows the product category and is comparing options, prices and reviews. Someone typing 'waterproof hiking boots size 10' is deep in the buying journey, and Google Shopping ads put your listing directly in front of that comparison. For most ecommerce brands, the healthiest approach uses Meta to build the top of the funnel and Google Shopping and branded search to capture the resulting demand.

Local Businesses: Which Platform Wins Nearby Customers

Local service businesses generally see faster, more predictable ROI from Google Ads and Local Services Ads because most local searches carry strong buying intent, but Facebook can still work well for building brand recognition in a specific geography.

Restaurants, gyms, salons, clinics and home service providers all benefit from showing up when someone searches 'near me', because that phrase alone signals a customer ready to choose within a short window. Pairing Google Ads with a strong Google Business Profile and local SEO tends to compound results over time, since organic and paid local visibility reinforce each other.

Facebook still plays a role locally, particularly for building awareness of a new location, promoting time-bound offers, or retargeting people who visited your website or physical location. Local businesses that use both channels typically see Google Ads carrying most of the direct-response weight, with Facebook supporting brand familiarity and repeat visits.

B2B vs B2C: Where Each Platform Shines

B2B companies usually get more qualified pipeline from LinkedIn and Google Search, but Facebook can still be cost-effective for B2B awareness and retargeting; B2C brands typically see Facebook and Instagram carry more of the top-of-funnel volume.

In B2B, buying decisions are made by committees, involve longer sales cycles, and are driven by research rather than impulse. Google Search captures buyers actively researching solutions ('best project management software for agencies'), while Facebook's detailed job-title and interest targeting can still reach decision-makers, though conversion rates from cold Meta traffic tend to be lower for high-ticket B2B offers.

For B2C brands, particularly in fashion, consumer goods, food and beverage, and lifestyle categories, Facebook and Instagram often deliver a larger share of total paid revenue because the visual, emotional nature of these purchases fits the platform's format. Google still matters for B2C, mainly for branded search protection and for capturing comparison shopping.

Budget and Minimum Viable Spend

Google Ads generally needs a higher minimum monthly budget to gather enough data and out-compete rivals in the auction, while Facebook Ads can produce meaningful learnings and results at a somewhat lower entry point, though both need enough spend to exit the learning phase.

Google's auction is driven by keyword competition, so industries with high cost-per-click, such as legal, insurance, or SaaS, require larger budgets simply to appear consistently. Facebook's auction is driven more by audience size and creative performance, so a smaller, well-targeted budget can still generate the 50 or so conversions per week that the algorithm needs to optimise effectively.

Targeting: Keywords vs Audiences

Google Ads targets based on what people are actively searching for right now, while Facebook Ads targets based on who people are, what they have shown interest in, and how they behave, which makes the two highly complementary rather than interchangeable.

Google's keyword-based targeting, combined with audience signals and Performance Max's automated inputs, means your ad appears in direct response to expressed intent. This makes wasted impressions relatively rare when campaigns are well structured, though it also means you are limited to the volume of people actually searching relevant terms.

Facebook's targeting relies on demographic data, interests, behaviours, lookalike audiences built from your existing customers, and increasingly on Advantage+ audience expansion, which lets Meta's algorithm find converters beyond your manual targeting inputs. This gives Facebook far greater reach potential, since you are not capped by search volume, but it also means more of your budget goes toward people who were not actively looking to buy.

Retargeting: The Underrated ROI Booster on Both Platforms

Retargeting on both Google (via the Display Network and YouTube) and Facebook consistently delivers a lower cost per conversion than cold prospecting, because it reaches people who have already shown interest in your brand.

A visitor who added a product to cart but did not check out, or who read three blog posts but did not fill out a contact form, is far closer to converting than a stranger. Facebook's retargeting tends to feel more native, blending into a feed with a familiar product image or testimonial, while Google's retargeting via display banners and YouTube pre-roll can rebuild awareness across the wider web.

A well-run account almost always earmarks a portion of budget, commonly 10 to 20 percent, specifically for retargeting audiences on both platforms, since the ROI here is typically two to four times stronger than cold campaigns targeting new audiences.

Google's Performance Max: What It Changes

Performance Max is Google's AI-driven campaign type that automatically places ads across Search, Display, YouTube, Gmail and Maps from a single campaign, trading manual control for broader automated reach and, often, stronger results once optimised.

For advertisers with strong first-party data and clear conversion tracking, Performance Max can outperform traditional Search-only campaigns by finding converting audiences across formats that a manual campaign would never reach. The trade-off is transparency: advertisers get less granular control and less visibility into exactly which placements are driving results, which makes clean, well-structured feed data and conversion tracking essential inputs.

We generally recommend running Performance Max alongside, not instead of, a dedicated Search campaign for brand and high-intent terms, so you retain control over your most valuable keywords while letting Performance Max explore incremental reach.

Meta's Advantage+: The Facebook Equivalent

Advantage+ shopping and Advantage+ audience campaigns are Meta's answer to Performance Max, using machine learning to automatically find and target the audiences most likely to convert rather than relying on manual interest-based targeting.

For ecommerce brands with sufficient conversion volume, Advantage+ shopping campaigns often outperform manually built campaigns because Meta's algorithm can test far more audience combinations than a human media buyer could manage. The requirement, much like with Performance Max, is data: Advantage+ needs enough historical conversions and a properly configured pixel or Conversions API integration to learn effectively.

Smaller accounts with limited conversion history sometimes see less consistent results from Advantage+ simply because there is not enough signal for the algorithm to learn from, which is why a hybrid approach, part manual audience targeting and part Advantage+, is often the safer starting point.

ROI Comparison: Google Ads vs Facebook Ads by the Numbers

Neither platform is universally cheaper or more profitable; typical cost-per-lead and return-on-ad-spend ranges vary widely by industry, but the table below reflects general benchmark ranges we see across client accounts.

Three Real-World Scenarios (Anonymised)

Scenario 1: Local home services company

A residential HVAC company split a $2,000 monthly budget roughly 70/30 in favour of Google Search and Local Services Ads. Google delivered fewer but higher-intent leads that converted to booked jobs at a noticeably higher rate, while a smaller Facebook budget was used purely for seasonal maintenance offers and retargeting website visitors, producing a lower cost per lead but a longer path to a booked appointment.

Scenario 2: Direct-to-consumer skincare brand

A skincare ecommerce brand allocated roughly 65 percent of spend to Facebook and Instagram, using video creative and influencer-style content to drive discovery, and 35 percent to Google Shopping and branded search to capture the resulting demand. Blended ROAS improved once branded search was added, because a meaningful share of customers who saw the Facebook ad later searched the brand name directly on Google before purchasing.

Scenario 3: B2B software company

A B2B SaaS company found that Google Search delivered demo requests at roughly half the cost per acquisition of Facebook, but Facebook and LinkedIn retargeting of website visitors and webinar attendees produced meaningfully warmer leads that converted to paid customers faster once they finally converted through Google. The final mix leaned roughly 60 percent Google, 25 percent Facebook retargeting, and 15 percent Facebook cold prospecting for brand awareness.

The businesses that get the most out of paid media rarely ask 'Google or Facebook'; they ask which platform should own which part of the customer journey, and then they measure both accordingly.

How to Split Your Budget Between Google and Facebook

Start by mapping your budget to funnel stage rather than platform loyalty: allocate spend to whichever channel best serves awareness, consideration, and decision, then measure results by stage rather than expecting either platform to carry the entire funnel alone.

• High-intent, urgent-need businesses (home services, legal, healthcare): lead with 60-75% Google Ads, 25-40% Facebook for retargeting and brand awareness.
• Visually driven ecommerce and lifestyle brands: lead with 55-70% Facebook and Instagram, 30-45% Google Shopping and branded search.
• B2B software and services: lead with 55-65% Google Search, remainder split between Facebook/LinkedIn retargeting and top-of-funnel content promotion.
• New brands with little existing data: start closer to a 50/50 split for the first 60-90 days, then reallocate toward whichever channel is producing a lower cost per qualified lead or sale.
• Always protect a retargeting budget, roughly 10-20% of total spend, regardless of which platform gets the majority share.

Whatever split you choose, revisit it quarterly. Auction dynamics, seasonality, and platform algorithm changes shift performance over time, so a budget allocation that made sense six months ago may no longer be optimal today.

Key takeaways

• Google Ads captures existing demand through search intent; Facebook Ads creates demand through interruption and discovery.
• Lead generation businesses typically see higher close rates from Google but lower cost per lead from Facebook.
• Ecommerce brands often use Facebook for discovery and Google Shopping to capture the resulting comparison-shopping demand.
• Local businesses generally see faster ROI from Google Ads and Local Services Ads due to high-intent 'near me' searches.
• Performance Max and Advantage+ both trade manual control for AI-driven reach, and both need strong conversion data to perform well.
• The healthiest paid media strategy usually blends both platforms by funnel stage rather than picking one over the other.

Frequently asked questions