Calculate break-even units and revenue instantly. Find the exact sales volume needed before your business turns profitable — essential for pricing and planning.
Know Exactly How Much You Need to Sell Before You Make a Profit
Break-even analysis is one of the most important calculations in business planning. This break-even calculator lets you calculate break-even units, break-even revenue, and contribution margin instantly — showing the exact sales volume your business must reach before it starts generating profit. Whether you are planning pricing, testing cost structures, or modelling a new product line, knowing your break-even point makes every decision clearer. Ideal for small business owners, ecommerce operators, and financial planners who need to validate that their pricing and cost model is sustainable.
Many businesses do not have a sales problem — they have a break-even problem. Too many fixed costs or too thin a margin means no level of volume makes the business viable.
Key Break-even Formulas
Break-even Units = Fixed Costs ÷ (Selling Price − Variable Cost per Unit)
Contribution Margin = Selling Price per Unit − Variable Cost per Unit
Break-even Revenue = Break-even Units × Selling Price per Unit
Used by small business owners, ecommerce sellers, and startup founders for pricing and cost planning. No data stored. Calculations run instantly in your browser.
Tip: Start with Mode 1 (Break-even Units) if you know your cost structure. Use Mode 3 to find what you need to sell to hit a specific profit target.
Contribution Margin / Unit
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CM Ratio %
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Break-even Units
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Break-even Revenue
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Break-even Revenue
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Fixed Costs Covered
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Contribution Margin / Unit
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Units to Break Even
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Units for Target Profit
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Revenue for Target Profit
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What Your Result Means
A lower contribution margin means more units must be sold to cover fixed costs.
Increasing selling price or reducing variable cost lowers the break-even point — either lever works.
High fixed costs increase the sales volume needed before any profit begins.
If selling price is too close to variable cost, profitability becomes fragile — any cost increase breaks the model.
After the break-even point, each additional unit sold contributes directly to profit at your contribution margin rate.
Break-even Formula (Quick Answer)
Break-even Units = Fixed Costs ÷ Contribution Margin per Unit
Contribution Margin per Unit = Selling Price − Variable Cost per Unit
A business breaks even when total contribution from all sales exactly covers all fixed costs.
Tip: Break-even is a floor, not a goal. Once you know your break-even point, set your sales target above it to ensure the business generates meaningful profit — not just survival.
Break-even Results: What to Do Next
Break-even Is the Floor, Not the Goal
Your break-even point tells you the minimum sales volume to survive. Set your sales target well above it — build a margin of safety by targeting 130–150% of break-even volume.
Test Your Price Using Selling Price Calculator
If your break-even unit count feels too high, your selling price may be too low for your cost structure. Use the Selling Price Calculator to find the price that produces a viable contribution margin.
Validate Margin After Break-even
Once you know your break-even point, use the Profit Margin Calculator to confirm the gross margin on units sold above it. This tells you how quickly profit accumulates beyond the break-even threshold.
Model Discounts Before Running Sales
Discounts reduce contribution margin and raise the break-even point. A 15% discount on a product with a 40% CM ratio raises break-even revenue by 37.5%. Use the Discount Calculator before setting promotional pricing.
How to Use the Break-even Calculator
Choose your mode: Break-even Units if you know cost structure, Break-even Revenue if you know your CM ratio, or Target Profit to find the volume needed for a specific profit.
Enter your fixed costs for the period (rent, salaries, subscriptions, overhead) and your per-unit selling price and variable cost.
Click Calculate to see contribution margin, CM ratio, break-even units, and break-even revenue with the formula used.
Use the result to review pricing, adjust your cost structure, or set realistic sales targets before committing to a business plan.
What Is Break-even Point?
The break-even point is the level of sales at which total revenue equals total costs — the business makes neither a profit nor a loss. Every unit sold below the break-even point contributes toward covering costs but produces a net loss for the period. Every unit sold above it generates profit.
Break-even analysis is useful at every stage of a business — from validating a new product idea before launch, to reviewing whether an existing product line is still viable after a supplier price increase. Unlike a profit margin calculation (which tells you how profitable a sale is), break-even tells you how many such sales you need before the business becomes sustainable.
Use the Selling Price Calculator to find the right per-unit price first, then bring that price into this calculator to test the break-even point before committing to it.
Fixed vs Variable Costs: The Core Distinction
Cost Type
Definition
Business Examples
Fixed Costs
Stay the same regardless of how many units you produce or sell
Product/materials cost, packaging, payment processing fee per transaction, shipping per unit, direct labour per job, marketplace fees
Contribution Margin
Selling price minus variable cost — what each sale contributes toward fixed costs and eventual profit
If price = $50 and variable cost = $30, contribution = $20 per unit
Getting this distinction right is critical. Many small businesses mis-classify variable costs as fixed (or ignore them entirely), which understates their break-even point and leads to profitability surprises.
How to Calculate Break-even Units
The break-even units calculation requires three inputs: your total fixed costs for the period, your selling price per unit, and your variable cost per unit. From these, you first calculate the contribution margin, then divide fixed costs by that contribution margin.
The result tells you how many units must be sold in the period to cover all costs. Since you cannot sell a fraction of a unit, always round up to the next whole unit.
Selling price: $45 per unit | Variable cost: $22 per unit (product + packaging + processing fee)
Contribution Margin: $45 − $22 = $23 per unit
Break-even Units: $4,000 ÷ $23 = 174 units per month (rounded up)
Break-even Revenue: 174 × $45 = $7,830 per month
Every unit sold beyond 174 generates $23 in pure profit contribution.
After confirming your break-even, use the Profit Margin Calculator to validate the margin you are earning on units sold above the break-even point.
Break-even Revenue vs Break-even Units
Break-even units tells you how many individual items to sell. Break-even revenue tells you the dollar value of sales needed to cover all costs. For single-product businesses these convert directly. For multi-product or service businesses, revenue break-even is often more useful because it does not depend on knowing per-unit volumes.
The revenue-based formula uses the Contribution Margin Ratio (CMR) — the percentage of each revenue dollar that contributes to fixed costs and profit:
CM Ratio = (Contribution Margin per Unit ÷ Selling Price per Unit) × 100Break-even Revenue = Fixed Costs ÷ CM Ratio (as a decimal)
Average project revenue: $1,200 | Average variable cost per project: $480 (freelancer fees, tools, delivery time)
Contribution Margin: $720 | CM Ratio: 60%
Break-even Revenue: $8,000 ÷ 0.60 = $13,333 per month
Break-even Projects: $13,333 ÷ $1,200 = 12 projects per month
If the agency completes more than 12 projects per month, each additional project contributes $720 to profit.
Why Contribution Margin Matters
The contribution margin is the engine of your break-even analysis. A high contribution margin means fewer units are needed before fixed costs are covered. A low contribution margin means you need significantly higher volume to survive — and any disruption (a fee increase, a supplier price rise, a return rate spike) can push you back below break-even.
Contribution margin and pricing decisions
Businesses often focus on revenue targets but neglect the structure of their margin. Selling 500 units at $60 with a $5 contribution margin produces $2,500 in contribution. Selling 200 units at $100 with a $40 contribution margin produces $8,000 in contribution. Less volume, higher contribution margin — far better business model for covering fixed costs and building profit.
How discounts destroy contribution margin
A 10% discount on a $50 product with a $20 contribution margin does not reduce profit by 10% — it reduces contribution margin by 25% (from $20 to $15). The break-even point increases substantially. Use the Discount Impact Calculator to model exactly how a discount raises your break-even — it shows the exact profit loss per unit and the sales volume increase needed to recover it.
Reduce variable costs through supplier negotiation, lower-fee payment processing, or reduced packaging cost
Reduce fixed costs by renegotiating leases, eliminating unused software, or restructuring overhead
Increase contribution margin ratio by shifting product mix toward higher-margin items
Common Break-even Mistakes
1. Treating semi-variable costs as fixed
Some costs are partly fixed and partly variable — utilities, casual labour, shipping above a threshold. Mis-classifying these as entirely fixed overstates your contribution margin and understates break-even units. Review every cost line carefully.
2. Forgetting platform and payment fees
Ecommerce sellers frequently omit marketplace fees (Amazon FBA, eBay, Etsy) and payment processing fees from variable costs. These can add 12–18% to effective variable cost, which dramatically reduces contribution margin and raises break-even units.
3. Using the wrong time period
Break-even is always period-specific. Fixed costs that are annual (insurance, annual software licences) must be converted to monthly if your break-even is monthly. Inconsistent time periods produce unreliable results.
4. Ignoring returns, damages, and shrinkage
Returns, damaged goods, and inventory shrinkage all reduce effective revenue and increase effective variable cost. A 5% return rate on 200 units means you are selling 190 net units — but variable costs were incurred on 200. Build return rates into your variable cost or volume assumptions.
5. Assuming a static break-even forever
Break-even changes every time a cost changes. A rent increase, a supplier price rise, a new software subscription, or a platform fee change all shift your break-even point. Recalculate quarterly or after any material cost change.
6. Pricing to break even, not to profit
Break-even is the floor, not the target. Once you know your break-even point, use the Markup Calculator and Profit Margin Calculator to set a price that generates meaningful profit above it — not just survival.
Client 11 onward: $600 pure profit per month each. Target 15 clients = $3,000 monthly profit. Use the Profit Margin Calculator to confirm margin benchmarks at each client tier.
Use the Percentage Calculator for any quick cross-checks on ratios, margin percentages, or growth targets in your break-even modelling.
Frequently Asked Questions
The break-even point is the level of sales (in units or revenue) at which total income exactly equals total costs — the business makes neither a profit nor a loss. Every unit sold above the break-even point generates profit at the contribution margin rate. Every unit sold below it means the business is still covering costs with a net loss for the period.
Use the formula: Break-even Units = Fixed Costs ÷ Contribution Margin per Unit. First calculate Contribution Margin per Unit = Selling Price − Variable Cost per Unit. Then divide total fixed costs by the contribution margin. The result is always rounded up to the next whole unit, since you cannot sell a fraction of a unit.
Contribution margin is the amount each unit sale contributes toward covering fixed costs and, beyond break-even, generating profit. It is calculated as Selling Price per Unit minus Variable Cost per Unit. A high contribution margin means fewer units are needed to cover fixed costs. A low contribution margin means a higher break-even point and greater sensitivity to cost changes or discount pressure.
No — if selling price equals variable cost, the contribution margin is zero and break-even is mathematically impossible regardless of volume. If selling price is below variable cost, each additional unit sold increases the total loss. The calculator will warn you when this condition is detected. To fix it, either increase the selling price or reduce variable cost per unit.
Discounts directly reduce the selling price, which reduces contribution margin and increases the number of units needed to break even. A 10% discount on a product with a $20 contribution margin reduces it to $15 (a 25% drop) if variable cost is $30 and original price is $50. This raises break-even units by 33%. Use the Discount Calculator to model the exact impact of promotional pricing before committing to a sale.
GST should be excluded from both your selling price and variable cost inputs when calculating break-even. If you are GST-registered, the GST you collect is not revenue — it flows to the tax authority. Similarly, GST paid on variable costs is recovered as an input tax credit. Run your break-even calculation on GST-exclusive (net) figures. Use the GST Calculator to extract the net price from any GST-inclusive amount before using it in this calculator.
Next step: Set your selling price first using the Selling Price Calculator, then run your break-even again to see how the updated price changes your required sales volume.
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