Tool: Break-even calculator · Embed · All how-we-calculate pages · Questions
Purpose
Estimate the number of units (and revenue) needed so contribution margin covers fixed costs, using a constant price and variable cost per unit you type. Educational only.
Core formulas
- Contribution margin:
price − variableCost - Margin %:
margin ÷ price × 100 - Break-even units:
fixedCosts ÷ margin(when margin > 0) - Break-even revenue:
breakEvenUnits × price - Profit at planned units:
margin × units − fixedCosts
Non-positive margin
If price does not exceed variable cost, the model reports that break-even is never reached under constant assumptions (unless fixed costs are also zero).
What we intentionally leave out
- Taxes, depreciation schedules, and multi-product mix
- Capacity limits, inventory, and seasonality
- Price discounts and changing variable costs at scale
- Live market or industry benchmarks
Related
Last reviewed: August 9, 2026.
YMYL notice: This site is for education only. It is not financial, tax, or investment advice. Nestfigure is not a bank, credit union, broker, investment adviser, or fiduciary. Product terms, rates, and penalties vary—always read your institution’s disclosures before acting. Calculator results are mathematical estimates, not bank quotes.