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Grow what you measure.

A plain-English library of business KPIs: what each one means, the formula, a worked example, and the pitfalls — for sales, marketing, finance, operations, customers and people. Every guide links to its sources.

Start hereWhat Is a KPI? Metrics, KPIs and OKRs ExplainedA plain-English guide to key performance indicators: how they differ from ordinary metrics and OKRs, what makes a good one, and examples from every department.
Free toolsKPI calculatorsCAC, lifetime value, margins, cash conversion, churn, NPS, turnover, OEE and more — same formulas as our guides.Open the calculators →

Articles

24 articles

KPI Fundamentals

What Is a KPI? Metrics, KPIs and OKRs Explained

A plain-English guide to key performance indicators: how they differ from ordinary metrics and OKRs, what makes a good one, and examples from every department.

Read · 6 min read →
KPI Fundamentals

Leading vs. Lagging Indicators: What They Are and Why You Need Both

Lagging indicators show results after the fact; leading indicators give earlier warning. Learn the difference, see example pairs, and find out why you need both.

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KPI Fundamentals

How to Choose KPIs: Goals, Ownership, Data and Review Cadence

A step-by-step approach to picking KPIs that matter: start from goals, keep the list short, assign owners, check your data, and set a review rhythm.

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KPI Fundamentals

Building a KPI Dashboard: Audience, Layout, Charts and Pitfalls

How to design a KPI dashboard people actually use: know your audience, lay it out for a quick glance, pick the right charts, refresh sensibly, and avoid common traps.

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KPI Fundamentals

Goodhart's Law, Campbell's Law and the Trouble With Vanity Metrics

Why measures stop working once people are rewarded for hitting them, where Goodhart's and Campbell's laws come from, and how to spot vanity metrics and gaming.

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KPI Fundamentals

Setting KPI Targets and Using Industry Benchmarks With Care

How to set realistic KPI targets from your own baseline, write SMART-style goals, and judge published industry benchmarks with the caution they deserve.

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Sales & Marketing KPIs

Customer Acquisition Cost (CAC) and the CAC Payback Period

Learn how to calculate blended and paid customer acquisition cost, and how long it takes a new customer to pay back what you spent to win them.

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Sales & Marketing KPIs

Conversion Rates and Funnel Metrics: Leads, MQLs and SQLs

How to measure visit-to-lead and lead-to-customer conversion, what MQLs and SQLs mean, and why every company draws those lines a little differently.

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Sales & Marketing KPIs

Win Rate, Average Deal Size and Sales Cycle Length

Three core sales KPIs explained: what share of deals you win, how much each is worth, and how long they take to close, with formulas and pitfalls.

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Sales & Marketing KPIs

Pipeline Coverage Ratio and Sales Velocity Explained

How to check whether your sales pipeline is big enough to hit a target, and how the sales velocity formula shows the revenue your pipeline produces each day.

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Sales & Marketing KPIs

Customer Lifetime Value (CLV) and the LTV:CAC Ratio

How to estimate customer lifetime value using simple and margin-based formulas, how to compare it with acquisition cost, and where CLV estimates go wrong.

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Sales & Marketing KPIs

ROAS vs. Marketing ROI vs. MER: How to Measure Marketing Returns

Return on ad spend, marketing ROI and marketing efficiency ratio answer different questions. Learn each formula and why attribution makes them harder to trust.

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Finance & Operations KPIs

Gross, Operating and Net Profit Margin Explained

How to calculate gross, operating and net margin, what each layer of profit tells you, and why markup and margin are not the same number.

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Finance & Operations KPIs

Cash Flow KPIs: Operating Cash Flow, Free Cash Flow and Runway

Learn how operating cash flow, free cash flow, burn rate and runway work, with a simple example and the mistakes that distort them.

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Finance & Operations KPIs

DSO, DIO, DPO and the Cash Conversion Cycle

How long is your cash tied up? Learn to calculate days sales outstanding, days inventory, days payable and the cash conversion cycle.

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Finance & Operations KPIs

Inventory Turnover and Days Inventory: Balancing Stock

How to calculate inventory turnover and days inventory, read the results, and balance the risk of stockouts against the cost of overstock.

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Finance & Operations KPIs

MRR, ARR and Recurring Revenue Growth Metrics

A plain-English guide to MRR, ARR, revenue growth rate, and expansion and contraction MRR, with a worked example and common counting mistakes.

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Finance & Operations KPIs

Operational Efficiency KPIs: On-Time Delivery, Yield and OEE

How to measure on-time delivery, capacity utilization, first-pass yield and overall equipment effectiveness (OEE), with worked examples.

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Customer & People KPIs

Net Promoter Score (NPS): Formula, Origin and Limits

How Net Promoter Score turns one 0-to-10 recommendation question into a loyalty measure, where it came from, and what its critics say.

Read · 6 min read →
Customer & People KPIs

CSAT and Customer Effort Score: Measuring Satisfaction and Ease

How to calculate customer satisfaction (CSAT) and Customer Effort Score (CES), where CES came from, and how to avoid common survey mistakes.

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Customer & People KPIs

Churn and Retention Rate: Customer, Revenue, NRR and GRR

How to calculate customer churn, revenue churn, retention rate, and gross and net revenue retention, with worked examples and common traps.

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Customer & People KPIs

Employee Turnover Rate: Separations, Quits and Retention

How to calculate employee turnover, split it into voluntary and involuntary separations using BLS definitions, and measure retention.

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Customer & People KPIs

Employee Engagement and eNPS: Measuring How People Feel at Work

How employee engagement surveys and employee Net Promoter Score (eNPS) work, how to calculate them, and how to keep the results honest and useful.

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Customer & People KPIs

Hiring KPIs: Time to Fill, Cost per Hire and Quality of Hire

How to measure time to fill, time to hire, cost per hire under the ANSI/SHRM standard, offer acceptance rate and quality of hire.

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Glossary

65 business metrics explained in a sentence or three — from average order value to working capital.

Browse the glossary →