Facebook Ads and Google Ads solve fundamentally different problems, even though they’re often compared as if choosing between them is a simple either-or decision. The right platform depends far more on what kind of demand exists for your offer than on which platform is generally “better.”
The Core Difference: Intent vs. Interruption
Google Ads shows up when someone is actively searching for what you offer — they already have the need, and you’re answering it. Facebook Ads shows up while someone is scrolling, not looking for you at all — you’re interrupting with something that might interest them. This single difference drives almost everything else about how each platform performs.
When Google Ads Tends to Win
- Your service solves an urgent, known problem — a broken pipe, a legal issue, a specific repair
- People already search for exactly what you offer by name or category
- You’re selling a considered purchase where someone actively researches before buying
When Facebook Ads Tends to Win
- Your offer is visually appealing and easy to grasp at a glance — products, food, home services with strong before/after photos
- Nobody actively searches for what you do because they don’t know it exists yet
- You want to build awareness and retarget people who’ve already shown interest — visited your site, engaged with a post
A Simple Test: Would Someone Search for This?
Ask honestly: does a real customer type your service into Google when they need it? If yes — “emergency plumber near me,” “divorce lawyer [city]” — Google Ads captures demand that already exists. If your offer is something people discover rather than search for — a new product, a subscription box, a niche hobby service — Facebook’s ability to target by interest and behavior often works better, since there’s no existing search demand to capture.
Cost Differences Worth Knowing
Google Ads cost per click tends to run higher for competitive commercial keywords, but each click represents someone actively looking to buy right now. Facebook’s cost per click is often lower, but conversion rates can be lower too, since you’re reaching people mid-scroll rather than mid-decision. Neither cost structure is universally cheaper — what matters is cost per actual customer, which requires tracking both through to conversion, not just comparing click costs.
The Combination That Often Works Best
For businesses with an existing customer base or site traffic, Facebook retargeting — showing ads specifically to people who already visited your site — often performs better than cold Facebook targeting, because it’s reaching people with some existing intent rather than pure interruption. Pairing Google Ads to capture active searchers with Facebook retargeting to bring back people who didn’t convert the first time is a common, effective combination once budget allows for both.
Where to Start With a Limited Budget
If you can only run one platform right now, start with whichever matches real, existing search demand for your offer — that’s almost always Google Ads for local service businesses. If you already ran through our Google Ads budget guide, use that same calculation approach for Facebook: know your customer value and target cost per acquisition before committing spend to either platform.
Where This Fits Into Your Bigger Marketing Picture
The right platform depends on your specific offer and how customers actually find businesses like yours. If you want help deciding between them, or setting up both, that’s exactly what my PPC and social ads services cover, along with a free consultation.