Marketing without numbers is guesswork. And guesswork is expensive. Those who don't know their KPIs (Key Performance Indicators) burn budget without realizing it. Here are the most important marketing metrics -- explained with benchmarks and concrete examples.
CPM -- Cost per Mille
Definition: What does it cost to show your ad to 1,000 people?
Formula: (Ad spend / Impressions) x 1,000
Benchmark: Facebook/Instagram: 5-15 EUR | YouTube: 10-20 EUR | LinkedIn: 30-60 EUR | TikTok: 3-10 EUR
When important: For awareness campaigns when the goal is visibility, not clicks or sales.
CPC -- Cost per Click
Definition: What does a single click on your ad cost?
Benchmark: Google Search: 1-3 EUR | Facebook: 0.30-1.50 EUR | LinkedIn: 3-8 EUR | TikTok: 0.20-0.80 EUR
CPA -- Cost per Acquisition
Definition: What does it cost to acquire a new customer?
Benchmark: Varies enormously by industry. E-commerce: 30-80 EUR | SaaS: 200-500 EUR | Fashion: 15-50 EUR
ROAS -- Return on Ad Spend
Definition: How much revenue does each advertising euro generate?
Benchmark: A ROAS of 4:1 is considered good. With luxury goods, 2:1 can already be profitable.
Important: ROAS does not account for margins. A ROAS of 3 at 20 percent margin means a loss.
CTR -- Click-Through Rate
Benchmark: Google Search: 3-5% | Display: 0.1-0.5% | Facebook: 0.9-1.5% | Email: 2-4%
Conversion Rate
Benchmark: E-commerce: 2-4% | Landing Pages: 5-15% | B2B: 1-3%
LTV -- Lifetime Value
Definition: How much revenue does a customer generate over the entire business relationship?
Formula: Average order value x Purchase frequency x Customer lifetime
LTV is the most important strategic metric. It determines how much you can afford to spend on customer acquisition.
CAC -- Customer Acquisition Cost
The golden rule: LTV:CAC should be at least 3:1.
Tools for Measurement
- Google Analytics 4: Free, powerful, essential for every website
- Meta Business Suite: KPIs for Facebook and Instagram Ads
- HubSpot: CRM with integrated marketing tracking and LTV calculation
Conclusion: Data Is Your Best Friend
KPIs make marketing measurable, comparable, and optimizable. The most important rule: decide on your KPIs before the campaign, not after. For agencies worldwide: transparent KPI communication is the best trust-builder with clients.