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What is a KPI? – Meaning, definition & application explained simply

KPI – these three letters are constantly read in the business world. But what exactly is a KPI? And why are KPIs so important for companies?

Key Performance Indicator (KPI) Definition – what does KPI mean?

KPI is the abbreviation for Key Performance Indicator. KPI in German means: „Leistungskennzahl“ or „Schlüsselkennzahl“. A KPI measures how well a company, team, or measure is performing in relation to a specific goal.

In short: a KPI makes success measurable.

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Meaning of KPI in practice

Different KPIs can be used in each area of a company:

  • In marketing, for example, click-through rates, conversion rates, or ROI are measured.

  • In sales, KPIs such as revenue, new customers, or closing rate are important.

  • In customer service, response time or customer satisfaction are relevant key performance indicators.

This is how selecting the right KPIs ensures that successes become visible – and weaknesses can be specifically improved.

What are good KPIs?

Not every number is automatically a good KPI. A good KPI is:

  • Relevance-related It refers directly to a specific objective.

  • Measurable This can be supported by numbers.

  • Easily influenced The team can actively change or improve them.

  • Comparable It is comparable over time or between teams.

Example: „Website visitors“ is a metric. „10% more website visitors per month“ is a clear KPI.

Why are KPIs so important?

Without KPIs, success often remains subjective. With them, progress, efficiency, and goal achievement can be objectively measured. Furthermore, they help with task prioritisation and strategic decisions – a clear competitive advantage.

KPIs German – Typical KPIs at a Glance

Here are a few examples of KPIs in the German-speaking business world:

AreaExample KPIs
MarketingCPC (Cost per Click), Leads, Reach
SalesRevenue, Conversion Rate, Upsell Rate
HRFluctuation Rate, Time to Hire
Customer serviceResponse time, CSAT (Customer Satisfaction Score)

Conclusion: KPIs help to keep track of things

Whether you work in marketing, manage projects, or develop your business strategically – without KPIs, you'll lack direction. They are the foundation of every data-driven decision. So, anyone asking „what is a KPI?“ is essentially asking: How do I know if I'm on the right track?

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