Fundamentals · 12 min read · Profit Margin Calculator
How to Calculate Profit Margin and Understand What It Really Means
Calculate gross, operating, and net profit margin, then use each layer to see where a business earns or loses money.
Business metric library
Learn the formula, then follow the money
Calculators answer “what is the result?” These guides explain what goes into it, how to read it, and where a clean formula can still mislead a real business decision.
Foundations and formulas
Start with the definition, formula, inputs, and interpretation of each business metric.
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Fundamentals · 11 min read · Markup Calculator
Markup vs. Margin: What’s the Difference and Why It Matters
See why markup and margin produce different percentages, convert between them, and avoid costly pricing mistakes.
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Fundamentals · 12 min read · Break-even Calculator
How to Calculate Your Break-Even Point
Find the sales volume needed to cover fixed and variable costs and learn how contribution margin drives the answer.
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Fundamentals · 12 min read · Business ROI Calculator
How to Calculate Business ROI
Measure investment return with the right costs and time period, and learn what ROI does—and does not—tell you.
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Fundamentals · 11 min read · Customer Acquisition Cost Calculator
How to Calculate Customer Acquisition Cost
Calculate CAC from marketing and sales costs, choose a consistent period, and interpret blended acquisition cost.
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Fundamentals · 12 min read · Customer Lifetime Value Calculator
How to Calculate Customer Lifetime Value
Estimate customer lifetime value from gross profit—not just revenue—and connect CLV to acquisition decisions.
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Fundamentals · 11 min read · Churn Rate Calculator
How to Calculate Customer Churn Rate
Measure the share of starting customers lost during a period without letting new customer growth hide retention problems.
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Fundamentals · 11 min read · Burn Rate Calculator
How to Calculate Burn Rate
Separate gross burn from net burn, measure real cash movement, and recognize when a business is generating cash.
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Fundamentals · 11 min read · Cash Runway Calculator
How to Calculate Cash Runway
Turn cash balance and net burn into a planning horizon, including cash-neutral and net-generation cases.
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Fundamentals · 13 min read · Pricing Calculator
How to Price a Product for Profit
Build a product price from variable cost, fixed costs, expected sales, and target margin instead of markup alone.
Practical business examples
Follow real-world assumptions through each calculation, then compare what changes in an alternative scenario.
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Practical example · 14 min read · Profit Margin Calculator
Profit Margin Example: From Revenue to Net Profit
Follow one home-goods store income statement from revenue through gross, operating, and net profit margins.
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Practical example · 13 min read · Markup Calculator
Markup Pricing Example: From Unit Cost to Selling Price
Price a batch of leather card holders and see exactly why markup and margin produce different percentages.
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Practical example · 14 min read · Break-even Calculator
Break-Even Analysis Example for a Small Business
Model a mobile car-care service below, at, and above its rounded-up monthly break-even point.
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Practical example · 14 min read · Business ROI Calculator
Business ROI Example: Measuring a New Investment
Trace a local print shop’s equipment investment from added monthly profit to ROI and payback period.
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Practical example · 15 min read · Customer Acquisition Cost Calculator
Customer Acquisition Cost Example: What Should Be Included?
Build a complete online-school acquisition cost stack and compare blended CAC with an ad-spend-only shortcut.
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Practical example · 14 min read · Customer Lifetime Value Calculator
Customer Lifetime Value Example for a Subscription Business
Follow monthly subscription revenue through billing frequency, lifespan, and gross margin to a profit-based CLV.
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Practical example · 13 min read · Churn Rate Calculator
Customer Churn Example: Measuring Customer Loss Correctly
Reconcile a fitness subscription’s customer movement and compare equal ending counts with very different churn.
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Practical example · 14 min read · Burn Rate Calculator
Burn Rate Example: Gross Burn, Net Burn, and Cash Change
Read three months of startup inflows and outflows to separate gross burn, net burn, and cash generation.
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Practical example · 15 min read · Cash Runway Calculator
Cash Runway Example: Estimating When Cash Runs Out
Project a funded product company’s cash balance over time and interpret burn, neutral, and cash-generating states.
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Practical example · 15 min read · Pricing Calculator
Product Pricing Example: Covering Costs and Targeting a Margin
Layer candle materials, variable expenses, fixed-cost allocation, and a target margin into a sustainable price.
Decisions and improvements
Diagnose weak results, compare realistic levers, and separate the mathematical outcome from the business assumptions behind it.
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Decision guide · 16 min read · Profit Margin Calculator
How to Improve Profit Margin Without Relying on More Sales
Compare price, cost, and expense changes against one ecommerce income statement to see which decisions actually improve net margin.
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Decision guide · 15 min read · Markup Calculator
Markup vs Margin: How to Set the Right Selling Price
Turn a target markup or margin into the correct selling price, then measure the batch-profit and discount consequences.
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Decision guide · 16 min read · Break-even Calculator
How Price and Costs Change Your Break-Even Point
Compare price, variable-cost, fixed-cost, and discount scenarios to see what moves a service business’s monthly break-even point.
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Decision guide · 16 min read · Business ROI Calculator
How to Compare Business Investments Using ROI and Payback
Compare two equipment choices over one period using ROI, payback, profit per dollar, and absolute operating profit.
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Decision guide · 17 min read · Customer Acquisition Cost Calculator
How to Reduce Customer Acquisition Cost Without Hiding Costs
Build a complete acquisition-cost baseline, test improvement scenarios, and expose shortcuts that lower reported CAC only on paper.
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Decision guide · 16 min read · Customer Lifetime Value Calculator
How Retention, Revenue, and Margin Affect Customer Lifetime Value
Test revenue, margin, purchase frequency, and lifespan changes against one gross-profit-based customer value baseline.
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Decision guide · 16 min read · Churn Rate Calculator
How Churn Compounds Over Time and Affects Customer Retention
Compare churn rates over repeated periods and see how new customers can conceal losses from an existing customer base.
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Decision guide · 16 min read · Burn Rate Calculator
How to Reduce Burn Rate Without Misreading Cash Flow
Separate gross and net burn while comparing lower outflows, higher inflows, one-time spending, and cash generation.
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Decision guide · 17 min read · Cash Runway Calculator
How to Extend Cash Runway: Cost, Revenue, and Funding Scenarios
Compare expense, inflow, funding, cash-neutral, and cash-generation scenarios against one dated runway baseline.
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Decision guide · 17 min read · Pricing Calculator
How Discounts and Sales Volume Affect Product Profitability
Measure how a discount, volume change, higher variable cost, or missing fixed-cost allocation changes product profit.