A unit-economics scenario. It excludes taxes, capacity limits, changing prices, and step-fixed costs unless you include them in your inputs.
Calculation details
Planning estimate only. Platform fees, taxes, payment costs, and policies can change; verify current terms before pricing.
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What does this calculator estimate?
Use this break even calculator to find the whole units needed to cover fixed costs and a target profit. Enter fixed costs, selling price, and variable cost per unit. It calculates contribution margin, rounds required units up, then shows required revenue and projected profit at that unit count.
How this calculator works
Formula
Contribution per unit = price − variable cost. Required whole units = ceiling((fixed costs + target profit) ÷ contribution per unit).
Worked example
$10,000 fixed costs, $50 price, and $30 variable cost produce $20 contribution per unit and a 500-unit break-even threshold.
Assumptions to verify
- Price and variable cost per unit remain constant across the modeled volume.
- Fixed costs do not step upward at higher capacity levels.
- All produced units are sold; taxes, refunds, discounts, and financing are excluded unless entered in costs.
Frequently asked questions
What is contribution margin?
Contribution margin is price per unit minus variable cost per unit. It is the amount each unit contributes toward fixed costs and profit.
How are break-even units calculated?
Break-even units equal the fixed costs plus target profit, divided by contribution margin, rounded up to the next whole unit.
What if price per unit is less than or equal to variable cost?
The calculator returns an error because contribution margin is zero or negative, so selling more units cannot cover fixed costs.
Cite this tool
BoringToolsKit. “Break-Even Units Calculator.” boringtoolskit.com/break-even-units-calculator/ (reviewed July 2026). Free to reference in articles, syllabi, and answer posts with a link.
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