Break-Even Calculator

The break-even point is the exact sales volume at which your total revenue equals your total costs — the threshold between making a loss and making a profit. Understanding this figure is fundamental to any business decision involving pricing, production scale, or investment. This calculator takes your total fixed costs, the selling price per unit, and the variable cost per unit to instantly compute the number of units you must sell to break even, the revenue that represents, and your gross margin ratio. Entrepreneurs use it before launching a product to validate that their pricing model is viable. Business owners use it when evaluating a rent increase to see how many more units they need to sell to cover the higher fixed cost. Pricing strategists use it to model different price points and understand the volume trade-off each creates. The contribution margin per unit — the portion of each sale that contributes to covering fixed costs — is also displayed because it is a powerful indicator of pricing health and operational leverage.

The break-even calculation uses the contribution margin approach. Step 1: compute the contribution margin per unit by subtracting the variable cost from the selling price — contributionMargin = pricePerUnit − variableCostPerUnit. This represents how much each unit sale contributes toward covering fixed costs after its own production cost is paid. Step 2: divide total fixed costs by the contribution margin to get the break-even unit count — breakEvenUnits = fixedCosts ÷ contributionMargin. This is always rounded up to the next whole unit because you cannot sell a fractional product. Step 3: multiply break-even units by the selling price to get break-even revenue. Step 4: compute the gross margin ratio as (contributionMargin ÷ pricePerUnit) × 100 to show what percentage of each sale is margin rather than variable cost. If the selling price is not strictly greater than the variable cost, break-even is mathematically impossible and the calculator returns an error.