Break-Even Analysis Calculator
Find exactly how many units you need to sell — and at what revenue — to cover all your costs.
How to Use This Break-Even Analysis Calculator
Enter your total fixed costs (rent, salaries, insurance — costs that don't change with output), your selling price per unit, and your variable cost per unit (materials, packaging, commissions). Optionally add a target profit to see how many units you'd need to hit that goal. Hit "Calculate" to instantly see your break-even point in units and dollars.
Use the sliders to model different scenarios in real time. The table shows how profit or loss changes at each sales level.
Why This Matters
Break-even analysis is one of the most fundamental tools in business finance — yet many entrepreneurs skip it entirely. That's a costly mistake. Before launching a product, raising prices, or hiring new staff, you need to know the exact threshold where revenue covers every dollar of cost.
Consider a small bakery with $4,000/month in fixed costs (rent, equipment payments, one part-time employee). If each cake sells for $45 and costs $15 in ingredients and packaging, the contribution margin is $30. That means they need to sell just 134 cakes a month — about 4–5 per day — before making a single dollar of profit. Knowing this number changes everything: it tells you whether your pricing is viable, how aggressive your marketing needs to be, and whether a new product line is worth pursuing.
Investors and lenders often ask for break-even analysis before funding a business. It shows financial literacy and realistic planning. Whether you're a freelancer, a startup founder, a restaurant owner, or a product manager evaluating a new SKU, this number belongs in every financial decision.
How It's Calculated
The core formula uses the contribution margin — the amount each unit contributes to covering fixed costs after variable costs are paid:
If you include a target profit, the formula adjusts:
The contribution margin ratio (CMR) expresses this as a percentage of revenue and is useful for comparing products: CMR = Contribution Margin ÷ Selling Price × 100.
Tips & Common Mistakes
- Don't forget your own salary in fixed costs. Many sole proprietors exclude owner pay, then wonder why they're "profitable" but broke. Include a reasonable market-rate salary.
- Variable costs change at scale. Bulk discounts, overtime wages, and shipping tiers mean your variable cost per unit isn't always constant. Recalculate at different volume levels.
- Use realistic prices, not aspirational ones. Many businesses set an optimistic selling price when modeling break-even. Check actual market rates and factor in discounts, returns, and promotions.
- Break-even changes with product mix. If you sell multiple products at different margins, the mix of sales affects when you break even overall. Calculate per product line.
- Lower break-even by reducing fixed costs first. Cutting variable costs is harder — they scale with volume. Renegotiating rent or eliminating underused subscriptions lowers the bar permanently.
Frequently Asked Questions
What is a good break-even point?
There's no universal "good" number — it depends entirely on your industry, capacity, and time horizon. The key is whether your break-even volume is realistically achievable given your market size. If you need to sell 10,000 units/month in a niche market of 500 buyers, that's a problem. If you need to sell 50 units and have 2,000 leads, you're well-positioned.
What's the difference between break-even units and break-even revenue?
Break-even units is the number of items (or services, hours, etc.) you need to sell. Break-even revenue is the total dollar value of sales at that unit count, calculated by multiplying units by the selling price. Revenue is often more meaningful when pitching to investors or setting monthly sales targets.
Can I use this for a service business?
Absolutely. For services, "units" can be hours billed, client engagements, subscriptions, or any billable deliverable. Fixed costs are your overhead (office, tools, insurance), and variable costs per unit might include contractor fees, software used per client, or direct material costs. The math is identical.
How does the contribution margin ratio help me?
The contribution margin ratio (CMR) tells you what percentage of each sales dollar goes toward covering fixed costs and profit. A CMR of 60% means $0.60 of every $1 in sales contributes to overhead and profit. Higher CMR = more scalable business. Use it to compare products and prioritize high-margin items.