Free Profit Margin Calculator – Simplify Your Business Calculations Running a business involves juggling many tasks, and calculating profit margins accurately is essential for understanding your business's financial health. At Meru Accounting, we bring you a free Profit Margin Calculator to make this process simple and precise. Profit margin is a key metric that tells you how much of your sales revenue turns into profit after covering all expenses. This insight helps you make informed pricing decisions, control costs, and increase profitability.