Comparison Guide
Google Ads and Facebook Ads are the two dominant paid advertising platforms, but they work in fundamentally different ways. Google captures demand — showing ads to people already searching for your product. Facebook creates demand — reaching people who match your ideal customer profile before they search. Choosing the right platform depends on your sales cycle, budget, and audience awareness.
Quick Verdict
If your customers are actively searching for a solution right now, Google Ads typically wins on conversion intent and speed to lead. If you're building brand awareness, targeting a specific demographic, or selling visually appealing products, Facebook Ads offer unmatched audience granularity at a lower CPM. Most high-growth businesses eventually use both.
| Criterion | Google Ads | Facebook Ads | Winner |
|---|---|---|---|
| Intent | High — user is actively searching | Passive — user is browsing socially | Google Ads |
| Average CPC | $1–$10+ depending on industry | $0.50–$3 for most niches | Facebook Ads |
| Audience Targeting | Keyword, location, device, demographics | Interests, lookalikes, behaviours, custom audiences | Facebook Ads |
| Ad Formats | Text, Shopping, Display, Video | Image, Video, Carousel, Stories, Reels | Facebook Ads |
| Speed to Results | Fast — leads within 24–48 hours of launch | Moderate — needs optimisation period of 1–2 weeks | Google Ads |
| B2B Suitability | Excellent for high-intent B2B keywords | Limited — LinkedIn outperforms for B2B | Google Ads |
Choose Google Ads when your customers are actively searching for solutions — e.g. 'emergency plumber near me' or 'CRM software for small business'. It's ideal for service businesses, high-ticket purchases, and industries where search intent is strong. Google Ads also works well when you need leads quickly and can't wait months for organic SEO to take hold.
Choose Facebook Ads when you need to reach a specific audience before they search for you — particularly for impulse purchases, lifestyle products, and B2C brands. Facebook's lookalike audiences are powerful for scaling a proven offer. It's also the better choice for retargeting website visitors and building a warm audience over time.
Use both when you want to dominate the full funnel. Run Google Ads to capture bottom-of-funnel searchers ready to buy, while Facebook retargets those who clicked but didn't convert and builds awareness among new audiences. This dual-channel approach typically produces the highest ROI for businesses with budgets above £2,000/month.
ROI depends heavily on your industry and offer. Google Ads typically delivers higher-intent leads but at a higher CPC. Facebook Ads often have a lower cost per click but require more nurturing. Many businesses see the best overall ROI when running both platforms together, using Google for intent-driven leads and Facebook for retargeting and awareness.
Absolutely — and most successful lead generation campaigns do exactly that. Assign separate budgets, track each channel's contribution independently, and use cross-channel attribution to understand how they complement each other. Running both reduces your reliance on a single platform and stabilises your lead flow.
Google Ads generally outperforms for local service businesses because customers search for plumbers, dentists, and electricians by name. Google Local Service Ads (pay-per-lead) are especially effective. Facebook can complement with local awareness campaigns, but search intent makes Google the priority for local services.
A common starting split is 60% Google Ads / 40% Facebook Ads for B2C businesses, or 80% Google / 20% Facebook for B2B. However, the right split depends on your conversion data. Start with a minimum of £500–£1,000 per platform per month to gather enough data for meaningful optimisation, then reallocate budget to whichever channel delivers the lower cost per lead.
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