ROI Calculator
Calculate return on investment (ROI). Enter the investment cost and the return received – get ROI percentage, profit, and annualised ROI if you provide the period.
The profit margin and markup calculator instantly computes the key profitability metrics for any product or service. Enter the purchase price and selling price — the calculator returns gross margin percentage, markup percentage, and unit profit. Essential for retailers, e-commerce sellers, freelancers, and anyone pricing products or services.
Unit profit = selling price - purchase price. Margin (%) = profit / selling price x 100. Margin is always lower than markup. Markup (%) = profit / purchase price x 100. Markup can exceed 100%. Example: cost PLN 100, price PLN 200 — markup 100%, margin 50%.
Purchase price: PLN 100, selling price: PLN 150. Unit profit: PLN 150 - PLN 100 = PLN 50. Margin: 50 / 150 x 100 = 33.33%. Markup: 50 / 100 x 100 = 50%. Key insight: margin is calculated from the selling price, markup from the cost.
Margin is profit as a percentage of the selling price: margin% = profit / selling price x 100. Markup is profit as a percentage of the cost: markup% = profit / cost x 100. For the same product, margin is always lower — e.g. cost PLN 100, sell PLN 125: margin 20%, markup 25%.
It varies by industry. Electronics: 5-15%. Clothing and footwear: 40-80%. Grocery: 10-30%. Software and digital: 60-90%. Professional services: 50-70%. The key is that your margin covers all fixed costs and generates operating profit.
Selling price = cost / (1 - margin%). Example: cost PLN 80, target margin 40%. Price = PLN 80 / (1 - 0.40) = PLN 80 / 0.60 = PLN 133.33. This formula guarantees the target margin regardless of cost level.
Selling price = cost x (1 + markup%). Example: cost PLN 80, markup 50%. Price = PLN 80 x 1.50 = PLN 120. Note: the actual margin on this sale will be lower than the markup percentage.
Margin is calculated on net (ex-VAT) prices. Use net prices for both cost and selling price — VAT is a pass-through tax that does not affect your actual profit. Add VAT on top of the net selling price after setting your desired net margin.
Gross margin = (selling price - cost of goods) / selling price x 100. It excludes operating costs. Net margin deducts all expenses including overheads and taxes. This calculator computes gross (product-level) margin.
Yes. A 100% markup means you doubled your cost. Markups above 100% are common in cosmetics, luxury goods, and software. Margin, however, can never exceed 100% — profit cannot be greater than revenue.
Break-even point = fixed costs / gross margin. A higher margin lowers the BEP — meaning fewer units need to be sold to cover fixed costs. Example: fixed costs PLN 5,000, margin 50% — BEP = PLN 10,000 in revenue.
E-commerce typically has lower store costs but higher delivery, returns, and digital marketing costs. Physical retail has higher rent and staff costs. Net margin can be similar — the key is covering total fixed costs at the given sales volume.
No — the calculator uses a single pair of prices. If you apply a discount, enter the actual after-discount price in the "Selling price" field. For discount impact analysis, use the Discount Calculator.
The calculator computes gross margin and markup at the product level. It does not account for taxes, VAT, indirect costs, or overheads. Consult an accountant for pricing decisions.
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