6 min read
Margin vs. Markup: Formulas, Differences, and Pricing Examples
Understand the difference between profit margin and markup, convert between them, and avoid common pricing mistakes.
Read guide →Formula library
Guides for better decisions
Understand what each metric means, how formulas connect, and where a clean-looking answer can mislead.
6 min read
ROI vs. ROAS: How to Measure Marketing Returns Correctly
Learn when to use ROI or ROAS, what each metric includes, and how margin changes the break-even return on ad spend.
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Customer Acquisition Cost: A Practical CAC Measurement Guide
Build a consistent CAC calculation, understand blended and channel CAC, and connect acquisition cost to lifetime value and payback.
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SaaS Metrics Guide: MRR, ARR, Churn, NRR, and Rule of 40
Understand the core SaaS metrics, how they connect, and the definition choices that make recurring-revenue reporting reliable.
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Break-Even Analysis: Formula, Contribution Margin, and Scenarios
Learn how to calculate break-even units, classify fixed and variable costs, and test price, volume, and cost scenarios.
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Digital Advertising Metrics: CPM, CPC, CTR, CPA, and ROAS
See how the main paid-media metrics connect from impressions to clicks, acquisitions, revenue, and profit.
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Freelance Pricing Guide: Hourly, Project, and Retainer Rates
Set sustainable freelance rates using billable capacity, project risk, effective hourly earnings, and retainer terms.
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Compound vs. Simple Interest: Formulas and Worked Examples
Compare simple and compound interest, understand compounding frequency, and choose the right formula for a loan or savings projection.
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