The break-even point is the number of units you must sell before you start making a profit, and every small business plan should know it. Enter your total fixed costs (rent, salaries, software and anything that does not change with volume), the price you sell each unit for, and the variable cost of producing one unit (materials, shipping, payment fees). This calculator finds the contribution margin per unit, then divides your fixed costs by it to give the break-even quantity, and multiplies that by price to show the break-even revenue. If the selling price is not above the variable cost, it tells you plainly that you can never break even at that price. Use it to test pricing, model a new product, or set a sales target. All math runs in your browser.