Calculate gross profit margin percentage, markup rate, revenue, and cost of goods sold.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Profit margin is profit divided by revenue: Margin = ((Revenue - Cost) / Revenue) × 100. Markup is profit divided by cost: Markup = ((Revenue - Cost) / Cost) × 100. A product bought for $50 and sold for $100 has a 50% profit margin and a 100% markup.
Use the formula: Selling Price = Cost / (1 - (Margin% / 100)). For a $60 cost and 40% desired margin: Price = 60 / (1 - 0.40) = $100.
Zero-egress companion tools in the Calculators suite
Solve percentage increases, decreases, fractions, and discounts.
Calculate future investment value with recurring contributions.
Calculate monthly payments, total interest, and amortization schedule.
Calculate your monthly mortgage payments and total interest easily.
