Facebook Ads vs Google Ads: Which Platform is Best for Your Business?
Key Takeaway: This guide covers everything you need to know about Facebook Ads vs Google Ads: Which Platform is Best for Your Business? — practical advice you can act on today.
In This Article
- Understanding the Core Differences: Intent vs Discovery
- Targeting Capabilities: Demographics vs Search Intent
- Ad Formats and Creative Requirements
- Cost Structures and ROI: CPC, CPM, and CPA Comparison
- Aligning Each Platform with Your Marketing Funnel
- Pros and Cons at a Glance
Understanding the Core Differences: Intent vs Discovery
Google Ads captures people actively searching; Facebook Ads puts your offer in front of people who didn’t know they wanted it.
Think of Google Ads as a direct tap on the shoulder. When a Wellington homeowner types “plumber leaky roof” into Google, they’re ready to buy. A well-optimised Google Search campaign can deliver a cost-per-click of $3–$5 for these high-intent queries in NZ, with conversion rates often hitting 5–10%. That’s pure demand—you’re intercepting a decision already made.
Facebook Ads, by contrast, is a discovery engine. You’re showing an Auckland bakery’s new sourdough range to people who love foodie pages but haven’t searched for bread. NZ advertisers routinely see click-through rates of 1–3% on well-targeted campaigns, but the conversion rate might sit around 1–3%. The magic is in creating a want someone didn’t have five minutes earlier—perfect for building brand awareness and retargeting window-shoppers.
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The real skill is recognising which job you’re hiring each platform to do. A Christchurch fitness studio might use Google Ads for “personal trainer Christchurch” searches (high intent, immediate booking) and Facebook Ads to showcase transformation stories to locals who follow wellness accounts (discovery, longer nurture). One captures demand, the other creates it—and most successful NZ businesses use both, just at different stages of the funnel.
Targeting Capabilities: Demographics vs Search Intent
Google Ads wins for intent, but Facebook Ads wins for awareness — which one matters more depends on whether your customer knows what they want yet.
| Platform | Strengths | Weaknesses | Best For |
|---|---|---|---|
| Google Ads | Targets users actively searching for your product or service | Limited to high-intent queries; can be expensive for competitive NZ keywords like "Auckland plumber" | Businesses with clear demand, e.g., a Wellington HVAC company offering emergency repairs |
| Facebook Ads | Builds demand from scratch using demographics, interests, and behaviours | Higher waste if you don't narrow audience; requires creative optimisation | Local businesses like a Christchurch coffee roastery targeting "coffee lovers" in their delivery zone |
| Google (Search) | Dominate for branded terms and solution-based searches | Low intent for broad keywords — budget drains fast without negative keywords | Service providers with urgent needs, like a Dunedin dentist targeting "wisdom tooth removal" |
For example, a Queenstown ski gear rental saw a 3x ROI on Google Ads during winter months, while a Northland wedding photographer built 80% of their leads from Facebook Ads by targeting "engagement ring" lookups. The real kicker: both platforms perform best when you customise your bid strategy — Optimise for conversions on Google, and optimise for reach on Facebook.
Ad Formats and Creative Requirements
Facebook Ads win on creative flexibility; Google Ads prioritise intent-driven text that matches search queries.
- Facebook supports image, video, carousel, and collection ads — ideal for storytelling.
- Google Ads require concise headlines (max 30 characters) and clear descriptions.
- Facebook’s carousel ads let Kiwi retailers showcase 10 products in a single ad.
- Google Shopping Ads demand high-quality product images with precise pricing and stock data.
- Video ads on Facebook can be 15 seconds; YouTube skippable ads must hook in 5 seconds.
- Google’s Responsive Search Ads automatically test 15 headlines and 4 descriptions.
- For local service businesses (e.g., Auckland plumbers), Google Lead Form ads drive direct calls.
- Facebook’s Dynamic Creative tool auto-tests image, text, and CTA combos to find winners.
Cost Structures and ROI: CPC, CPM, and CPA Comparison
Traditional cost metrics like CPC only tell part of the story — real ROI depends on your product price point and what you're willing to spend acquiring a customer.
Here’s how the two platforms stack up for a typical New Zealand business:
| Metric | Google Ads | Facebook Ads |
|---|---|---|
| Typical CPC (NZ) | $2–$8 for competitive keywords like "Auckland plumber" | $0.50–$3 for interest-based audiences |
| CPM (cost per 1,000 impressions) | $10–$30, often higher for local service ads | $5–$15, significantly cheaper for broad awareness |
| CPA benchmark | Lower for high-intent searches (e.g., "buy running shoes NZ") — often 2–3x less than Facebook | Better for retargeting or impulse buys under $100; CPA can double for high-commitment services |
A practical example: a Christchurch home builder we worked with saw a $450 CPA on Google Ads for "new home builds Christchurch" — high, but those leads closed at 12%. Their Facebook campaign targeting homeowners 35–55 generated leads for $85 CPA, but conversion rate was under 2%. The real ROI winner was Google, because the cost to acquire a closed customer was actually lower.
The takeaway: Google Ads typically delivers better ROI for immediate-buy scenarios, while Facebook excels at warming cold audiences or selling lower-priced products. Test both with a $500 budget each, track your true CPA by customer value, and let your numbers decide.
Aligning Each Platform with Your Marketing Funnel
Google Ads catches people who are already looking; Facebook Ads creates demand where none existed before. That’s the funnel difference in a nutshell.
At the bottom of the funnel, Google Ads is unbeatable. Someone types “buy running shoes Auckland” into search, and you can appear as the top result. We’ve seen NZ ecommerce stores achieve a 5:1 ROAS on Search campaigns by targeting high-intent keywords like “best-selling winter coats” plus branded terms. It’s direct-response gold.
Facebook Ads owns the top and middle of the funnel. Think awareness — a Dunedin cafe promoting its new brunch menu to locals who didn’t know they wanted smashed avo today. Then remarketing: someone who visited your site but didn’t buy gets shown a customised carousel of your best-selling hoodies. A Queenstown tour operator we worked with used Facebook retargeting to convert 12% of cold leads into bookings within 30 days.
The trick is recognising each platform’s role. Use Google Ads to capture demand that already exists. Use Facebook Ads to build and nurture demand through the funnel’s middle, then retarget those warm leads at the bottom. Most NZ businesses fail when they try to force one platform to do everything — instead, let each do what it’s built for.
Pros and Cons at a Glance
Choosing between Facebook and Google Ads comes down to intent: Google captures people actively searching, while Facebook puts your offer in front of people who didn't know they needed it.
Here’s how they stack up — no fluff, just the trade-offs that matter for Kiwi businesses.
| Advantages | Disadvantages |
|---|---|
| Google Ads targets high-intent users — someone searching “Auckland plumber” is ready to buy. You pay for that exact moment. | High competition can push cost-per-click to $5–$8 in NZ for popular terms like “Wellington wedding photographer”. |
| Facebook Ads let you remail website visitors and build custom audiences from your email list — perfect for nurturing leads over weeks. | Platform fatigue is real. Users scroll fast, so your ad can disappear in 0.17 seconds without a strong hook or video. |
| With Google, you control your daily budget down to the dollar, and you only pay when someone clicks. No hidden surprises. | Google’s learning phase often wastes budget in the first week while the algorithm figures out who to show your ad to. |
| Facebook excels at A/B testing creative — try 10 different images or captions for under $50 and see what sticks. | Facebook’s audience targeting has tightened since iOS 14 changes — expecting precise “people who like hiking and own a tent” might fall flat. |
| The Search network in Google Ads reaches people right when they need you — conversion rates for local NZ services often hit 3–5%. | You need a decent landing page for Google Ads to work. A basic website with slow load times will burn through your budget fast. |
Small NZ business owners typically start with Google Ads for quick, measurable leads (think: tradies, dentists, real estate agents), then layer Facebook Ads on top for brand awareness and retargeting once the basics are sorted.
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