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Business & Ecommerce
Practical business arithmetic for pricing, profit, margin and markup, with each relationship shown instead of hidden behind one result.
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Pricing arithmetic that stays explainable
Business percentages are easy to confuse because margin and markup use different starting numbers. The tools in this section keep cost, selling price, revenue and profit separate, then show the equation behind the result. That makes them useful for checking a quote, testing a target price or understanding why two percentages that sound similar are not interchangeable.
A calculator cannot supply the commercial assumptions. Shipping, payment fees, returns, tax, discounts and overhead may all change the real profit on a sale. Include every relevant cost and treat the result as a planning figure, not an accounting statement.