Loading…
Find exactly how many units you must sell before you make a single dollar of profit.
Find exactly how many units you must sell before you make a single dollar of profit.
Enter values above and click Calculate — results will appear here with the formula explained.
Break-even analysis separates costs into two kinds. Fixed costs — rent, salaries, software — arrive regardless of sales volume. Variable costs ride along with every unit. The difference between price and variable cost, the contribution margin, chips away at the fixed block. Below break-even, each sale reduces losses; above it, each sale adds pure contribution to profit at the contribution-margin rate.
Dividing fixed costs by that contribution tells you the exact unit count where the business stops losing money. The formula's hardest lesson is operating leverage: high-fixed-cost businesses (restaurants, manufacturers) break even late but scale explosively after; low-fixed businesses (freelancers, dropshippers) break even early but scale linearly. Knowing which game you're playing decides how to think about pricing, hiring and capacity — not just the single number.
Price changes move break-even inversely and powerfully: raising a $25 product to $28 with $10 variable cost lifts contribution from $15 to $18, dropping break-even from 800 to 667 units — 133 fewer sales needed monthly. Conversely, a 10% price cut can lift break-even 20%+ when variable costs are high. Run every discount, promotion and wholesale offer through this calculator first — volume at collapsed contribution destroys faster than no sale.
Variable cost accuracy decides honesty: include payment fees (~2–3%), marketplace commissions, shipping, packaging, returns, direct labor and materials per unit — not just COGS. A '30% contribution' that ignores the 6% platform fee plus 15% affiliate cut is actually ~9% — and break-even sits 3× farther away than the spreadsheet claims. Undercounting variable costs is the most common way startups model profitability that reality vetoes.
From break-even to margin-of-safety thinking: if forecasts project 1,200 units against an 800-unit break-even, the 400-unit cushion is 50% above break-even — room for demand shocks. Below ~20% cushion, fixed-cost heavy businesses become fragile to single bad months. Use the break-even line to size cash reserves (fixed costs × months to survive) and to gate hiring: each new fixed-cost hire raises the line for every future month.
Multi-product businesses average to a blended contribution margin by revenue mix, but the average hides which product carries the business. Compute per-product BEP mentally: the high-contribution item subsidizes the low one. Shifting mix toward high-contribution products moves the blended break-even faster than discounting to sell more low-margin units — mix is the lever, volume the trap.
Find exactly how many units you must sell before you make a single dollar of profit. Formula: BEP units = Fixed costs ÷ (Price − Variable cost). Example: With $12,000 monthly fixed costs, a $25 product and $10 variable cost, contribution is $15/unit.
Break-even analysis separates costs into two kinds. Fixed costs — rent, salaries, software — arrive regardless of sales volume. Variable costs ride along with every unit. The difference between price and variable cost, the contribution margin, chips away at the fixed block. Below break-even, each sale reduces losses; above it, each sale adds pure contribution to profit at the contribution-margin rate.
Dividing fixed costs by that contribution tells you the exact unit count where the business stops losing money. The formula's hardest lesson is operating leverage: high-fixed-cost businesses (restaurants, manufacturers) break even late but scale explosively after; low-fixed businesses (freelancers, dropshippers) break even early but scale linearly. Knowing which game you're playing decides how to think about pricing, hiring and capacity — not just the single number.
Price changes move break-even inversely and powerfully: raising a $25 product to $28 with $10 variable cost lifts contribution from $15 to $18, dropping break-even from 800 to 667 units — 133 fewer sales needed monthly. Conversely, a 10% price cut can lift break-even 20%+ when variable costs are high. Run every discount, promotion and wholesale offer through this calculator first — volume at collapsed contribution destroys faster than no sale.
Variable cost accuracy decides honesty: include payment fees (~2–3%), marketplace commissions, shipping, packaging, returns, direct labor and materials per unit — not just COGS. A '30% contribution' that ignores the 6% platform fee plus 15% affiliate cut is actually ~9% — and break-even sits 3× farther away than the spreadsheet claims. Undercounting variable costs is the most common way startups model profitability that reality vetoes.
From break-even to margin-of-safety thinking: if forecasts project 1,200 units against an 800-unit break-even, the 400-unit cushion is 50% above break-even — room for demand shocks. Below ~20% cushion, fixed-cost heavy businesses become fragile to single bad months. Use the break-even line to size cash reserves (fixed costs × months to survive) and to gate hiring: each new fixed-cost hire raises the line for every future month.
Multi-product businesses average to a blended contribution margin by revenue mix, but the average hides which product carries the business. Compute per-product BEP mentally: the high-contribution item subsidizes the low one. Shifting mix toward high-contribution products moves the blended break-even faster than discounting to sell more low-margin units — mix is the lever, volume the trap.
With $12,000 monthly fixed costs, a $25 product and $10 variable cost, contribution is $15/unit. Break-even is 800 units, or $20,000 of revenue. A price test: lifting price to $28 (contribution $18) drops break-even to 667 units — 133 fewer sales needed, showing how pricing, not just volume, moves the viability line.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
Last reviewed: September 2026 · Report an error