Margin = (Revenue − Cost) / Revenue × 100%. Markup = (Revenue − Cost) / Cost × 100%.
Cost $60, sell for $100 → Profit $40, margin 40%, markup 66.67%.
Profit margin is one of the clearest signals of business health. A healthy margin gives you room to reinvest, weather downturns and reward the team.
It varies by industry — 10% net margin is average, 20%+ is strong.
Retailers usually price with markup and report performance with margin.
Measure how well an investment performed — in total and per year.
See how compound growth turns steady contributions into serious money.
Estimate the monthly payment and total interest for any fixed-rate loan.