Multi-Product Break-Even Calculator

About this calculator

When a business sells more than one product, break-even can't be found from a single contribution margin — it uses the weighted average contribution margin instead: each product's (price − variable cost) is weighted by its share of the sales mix, summed, and then fixed costs are divided by that blended figure to get total break-even units, which are then split back out by the mix ratio to get each product's break-even quantity and the combined break-even revenue.

Because the mix ratio directly changes the blended margin, break-even volume shifts if the sales mix shifts even when nothing else about pricing or cost changes — a business selling more of its lower-margin product needs higher total volume to break even. Small business owners, financial analysts, and managers setting sales targets use multi-product break-even analysis to see how many total units — and of each product — are needed to cover fixed costs under a given product mix.