What's the Difference Between Facebook Ads and Google Ads?
Google Ads reaches people who are already searching for something. Facebook Ads, now run through Meta, reaches people who weren't looking and gives them a reason to want it.
That's the whole comparison in two lines: Google catches demand that exists, and Meta creates demand that doesn't exist yet. Almost every other difference follows from it, including what you pay for, what kind of ad you need and how much of it.
So the useful question is whether enough people already search for what you sell.
Facebook Ads and Google Ads Side by Side
| Facebook Ads (Meta) | Google Ads (Search) | |
|---|---|---|
| What triggers the ad | Meta predicts a person will respond | Someone searches a matching term |
| Buyer's mindset | Scrolling, not shopping | Looking for an answer or a product |
| What you control | Creative, offer, conversion goal | Keywords, negative keywords, bids, landing page |
| What the ad is | Video, image, UGC, motion | Mostly text, plus Shopping listings |
| What runs out | Fresh creative | People searching |
| Best at | New demand, visual products, impulse buys | Existing demand, problems people search for |
| Main limit | Needs a steady supply of new ads | Capped by search volume |
One note before going further: Google Ads is more than Search. Performance Max runs across YouTube, Display, Search, Discover, Gmail and Maps from one campaign. Demand Gen runs on surfaces like YouTube, Discover and Gmail, and Google says it reaches people even if they aren't searching for you yet. Those campaigns behave more like Meta than like Search. When people say "Google Ads vs. Facebook Ads", though, they nearly always mean search ads against feed ads, so that's the main comparison here.
How Each Platform Decides Who Sees Your Ad
Both platforms run an auction, and on both, the highest bid doesn't automatically win.
On Google, keywords match your ad to what people search for. A matching search enters your ad in an auction, and the winner is decided by Ad Rank, which weighs your bid, your ad and landing page quality, the context of the search and other factors. Your job is choosing the right terms and excluding the wrong ones.
On Meta, an auction runs each time there's a chance to show someone an ad. Meta picks the ad with the highest total value, a mix of your bid, the estimated chance this person takes the action you want, and ad quality. Meta says a more relevant ad "could win an auction against ads with higher bids."
The difference is in what you hand the system. On Google, you tell it what people are looking for. On Meta, the ad itself does most of that work. The creative signals who it's for, and Meta's delivery system finds more people who respond to it. That's why Andromeda pushed so much of Meta performance from targeting over to creative.
What Do Facebook Ads and Google Ads Cost?
Across $27.1 million in US Meta spend, the typical large account paid a $17.46 CPM, $2.18 per link click and $58 per purchase for ecommerce brands optimizing for purchases. The range is wide: the cheapest account paid a $4.21 CPM and the most expensive paid $61.24.
We don't have an equivalent Google data set, so we won't quote you one. We'd also be careful with any table that lines up the two platforms' CPCs. You pay for different things:
- A Google click comes from someone who asked. Your bid is the most you'll pay for it. Google says you often pay less, and that higher-quality ads can often lead to lower CPCs.
- A Meta click comes from someone you interrupted. Your cost per click depends on how many people stop and click, so the creative moves the number directly. Same CPM, better ad, cheaper click.
A cheap click from a stranger and an expensive click from someone comparing options aren't the same purchase. The only fair comparison is what each channel costs per customer, measured against what a customer is worth. Our ROAS calculator gives you a break-even number to hold both channels to.
What Kind of Ads Does Each Platform Need?
This is the difference most comparisons skip, and the one that decides what the channel really costs to run.
A search ad is mostly words. You can write and test it in an afternoon, and it keeps working for as long as people keep searching. The work sits in keywords, bids and the landing page.
A Meta ad has to interrupt someone who's watching their friend's vacation. That takes a hook, a format and an idea, and the idea wears out:
- In 17 large Meta accounts, the median account had 75 creatives running at once, about one for every $1,100 of weekly spend.
- Only about 17 of them carried the account.
- In 10 large accounts we tracked, only 34% of the top 10 ads were still in the top 10 two months later.
So budget for Meta in two lines: media and creative. A brand that funds the media and treats the ads as an afterthought often decides Meta "doesn't work" after a few months, when the real issue was running out of new ads. There's more on what that production looks like in our guide to paid social and our post on writing Facebook ad copy.
YouTube sits in between. It's on Google, but it needs real video made for the five-second skip, so it brings the same creative demands as Meta.
Which Is Easier to Measure?
Google looks easier to measure, and that's partly an illusion.
Someone who searches your brand name and buys was probably going to buy anyway, and may have searched because of an ad they saw on Instagram last week. Google gets the credit for the last step. Meta did the persuading, and it can look expensive next to a branded search campaign.
Each platform also reports on its own ads. Google's data-driven attribution, the default for most conversion actions, analyzes interactions with Google's own ad formats. Meta credits sales under its own attribution settings. The same order can be claimed by both, so adding up the two dashboards usually overstates what you sold.
Three checks hold up better:
- Look at the blended number. Total revenue divided by total ad spend, across every channel. If it holds when you add spend, the spend is working.
- Split branded and non-branded search. Branded search says little about what Google is adding. Non-branded search is the part to judge on its own.
- Run a holdout. Turn a channel off in some regions, or for a period, and see what happens to total sales. It's blunt and it beats arguing about dashboards.
How to Decide Where Your Next Dollar Goes
| Your situation | Start with | Why |
|---|---|---|
| People already search for what you sell | Google Search | The demand exists, so catch it first |
| New product or category nobody searches for | Meta | There's nothing to capture yet |
| Visual or demonstrable product | Meta | The ad can show why it's better |
| Urgent need, like a repair or a service | Google Search | People search at the moment of need |
| Impulse or discovery purchase | Meta | People buy things they didn't plan to |
| Competitors are bidding on your brand name | Google Search | Protects sales you've already earned |
| Search is maxed out and you want more growth | Meta | Search can't grow past the people searching |
Plenty of consumer brands end up on both, doing different jobs. Meta brings in people who've never heard of you. Google picks up the ones who go looking afterward, along with the people who were already in the market.
A sensible order for an ecommerce brand: cover branded search so nobody takes your own customers, add high-intent non-branded terms while they pay back, and put the growth budget on Meta along with the creative to support it. Then watch the blended number instead of asking each dashboard how it did.
Apps and SaaS work a little differently. There's a separate breakdown in how to advertise an app or SaaS product on Meta.
How We Think About This at Biddyco
We make ads for brands spending on Meta, so we're not neutral on this. We'd still tell you to fund search first if people are already looking for what you sell. That demand exists, so go get it.
Where we come in is the part search can't do: making people want something they weren't looking for. Our US-based senior team works across 100+ accounts spending $20M+ a month on Meta. We deliver UGC, motion and static ads every 2 to 4 weeks, plus YouTube and CTV creative when video on bigger screens is part of the plan. We work alongside your media buyers rather than replacing them.
If your Meta account is short on new ads, book an intro call. For more numbers, see our Meta Ads Statistics report.
The Bottom Line
Google Ads catches demand. Facebook Ads creates it. If people search for what you sell, cover that first, because it's hard to beat someone with their hand already up.
Search runs out when the searches do, and that's when Meta earns its budget, as long as you pay for the creative as well as the media.
FAQ
Is it better to advertise on Facebook or Google?
Neither is better overall. Google is better when people already search for what you sell. Facebook is better when you need to create demand, your product is visual, or search volume has run out. Many consumer brands end up using both.
Are Facebook ads cheaper than Google ads?
It depends, and per-click comparisons mislead. A Google click comes from someone who searched, and a Facebook click comes from someone who was scrolling. In our data, large US Meta accounts paid a median of $2.18 per link click. Compare cost per customer against what a customer is worth instead.
Should a small business use Google Ads or Facebook Ads first?
Start with Google Search if people look for your product or service when they need it, especially local services and urgent needs. Start with Meta if you sell something people discover, and you can make new ads regularly. Pick one and do it properly before splitting a small budget in two.
Can you run Facebook ads and Google ads at the same time?
Yes, and they often help each other. A Meta ad can make someone curious enough to search for you later, and Google catches that search. Just don't add the two dashboards together, because both may claim the same sale.
Which has a better ROI, Facebook Ads or Google Ads?
It depends on your product, your margins and how you measure. Branded search usually looks best and adds the least. Judge each channel on what it adds to total sales, using blended revenue and holdout tests instead of each platform's own report.
Are Meta ads the same as Facebook ads?
Yes. Facebook and Instagram are bought together in Meta Ads Manager, in the same auction. "Facebook ads" is the older name people still search for.
