Costing calculator
Break-Even Quantity Calculator
Estimate the volume needed before a job or product starts generating profit.
What this calculator does
- Find how many units must sell to cover fixed and variable costs.
- Use before launching a product, tool, or quoted program.
- Find how many units must sell to cover fixed and variable costs.
Formula used
- Contribution margin = price − variable cost
- Break-even units = fixed cost ÷ contribution margin
- Profit = volume × contribution margin − fixed cost
Inputs explained
- Fixed cost: undefined
- Variable cost per unit: undefined
- Selling price per unit: undefined
- Target volume: undefined
How to use the result
- Use before launching a product, tool, or quoted program.
- This is a planning calculator. Validate assumptions against your process data before using the result as a final quote, schedule, or engineering decision.
Common questions
- Which inputs usually drive the break-even quantity result? fixed cost, variable cost per unit, selling price per unit, and target volume usually have the biggest effect. When one of those assumptions changes, rerun the calculator and compare the new units result before updating the plan.
- What does the break-even quantity calculator do? Find how many units must sell to cover fixed and variable costs.
- What inputs do I need for the break-even quantity calculator? You need fixed cost, variable cost per unit, selling price per unit, and target volume. Use measured values from your line, quote package, supplier data, or current production plan whenever possible.
- How should I interpret the break-even quantity result? Treat the units output as a planning estimate for costing work. Compare it against process history, quoted assumptions, and operating limits before making final decisions.
Last reviewed 2026-05-12.