Break Even Calculator
Enter your monthly fixed costs like rent and software, your variable cost per unit, and your selling price. The calculator shows your contribution margin, break-even units and revenue, and how many units you need to hit a profit target. Add your average monthly sales to see days to break even.
Instant calculations · Editable fee assumptions · Export-ready results
Inputs
Values update results instantly. Adjust fee assumptions to match your seller dashboard.
Costs
Rent, software, salaries, and other costs that do not change with units sold.
Product, packaging, shipping, and per-unit fees.
Pricing
Price the customer pays before tax per unit.
Goals
Extra profit you want beyond covering costs. Leave 0 to see pure break-even.
Optional. Used to estimate days to break even each month.
Results
Live estimates based on your inputs and editable fee assumptions.
Monthly fixed costs
$2,000.00
Fixed costs you must cover each month.
Variable cost per unit
$8.00
Cost to deliver one more unit.
Selling price
$29.99
Charged per unit.
Contribution margin per unit
$21.99
Selling price minus variable cost. This is what contributes to fixed costs.
Break-even units
91
Units you must sell monthly to cover fixed costs.
Break-even revenue
$2,729.09
Revenue needed to break even.
Units for target profit
91
Units needed to cover fixed costs plus your profit goal.
Days to break even
0
Estimated days in month to reach break-even if you add average sales.
What this means
Break-even is 91 units or $2729.09 in revenue. Contribution margin is $21.99 per unit. Need 91 units to hit your $0.00 profit goal.
Monthly break-even analysis
Interactive breakdown of fees, costs, and remaining profit.
Distribution
- Fixed costs$2,000.0072.7%
- Variable at break-even$728.0026.5%
- Margin per unit$21.990.8%
Total $2,749.99 · 3 segments · interactive
Line-item breakdown
Dollar amounts, share of revenue, and visual proportion.
- Monthly fixed costs
- $2,000.00
- Variable cost per unit
- $8.00
- Selling price per unit
- $29.99
- Contribution margin
- $21.99
- Break-even units
- 91
- Break-even revenue
- $2,729.09
- Units for target profit
- 91
- Days to break even
- 0
Assumptions used
- • Fixed costs $2000.00 per month
- • Variable $8.00 × 91 units
- • Contribution $21.99 per unit
Share or export this calculation
Copy your numbers, save as PDF, or share with your team and seller communities.
Continue with related tools
These calculators pair well with Break Even and help you get a complete picture.
Check your margins
Profit Margin
Calculate gross and net profit, margin, markup, and break-even price from your real product costs and selling price.
You might also need
Markup
Convert product cost and markup percent into a selling price, and see markup versus margin instantly.
Measure your ad return
ROI
Measure return on investment for inventory, ads, tools, or any business spend and see payback time.
Project your revenue
Revenue
Project gross, net, and recurring revenue from price, volume, refunds, fees, and subscriptions.
Get more free tools like this
We'll send you new calculators, tips, and updates. No spam, unsubscribe anytime.
Break Even Calculator
Generated 7/29/2026, 2:48:51 AM · Currency USD
Inputs
- Monthly fixed costs: 2000
- Variable cost per unit: 8
- Selling price per unit: 29.99
- Target monthly profit: 0
- Average monthly sales (units): 0
Results
- Monthly fixed costs: $2,000.00
- Variable cost per unit: $8.00
- Selling price per unit: $29.99
- Contribution margin: $21.99
- Break-even units: 91
- Break-even revenue: $2,729.09
- Units for target profit: 91
- Days to break even: 0
Interpretation
Break-even is 91 units or $2729.09 in revenue. Contribution margin is $21.99 per unit. Need 91 units to hit your $0.00 profit goal.
How it works
Methodology & formulas
This calculator is transparent by design. Review the steps and formulas so you can trust the estimate and adjust assumptions when your dashboard differs.
Calculation steps
- 1Contribution margin is calculated as selling price minus variable cost per unit.
- 2Break-even units equal fixed costs divided by contribution margin, rounded up.
- 3Break-even revenue equals break-even units multiplied by selling price.
- 4Units for target profit equal fixed costs plus target profit divided by contribution margin.
- 5If average monthly sales are provided, days to break even is break-even units divided by daily average sales.
- 6If contribution margin is zero or negative, break-even is not achievable at current pricing.
Formulas
- Contribution margin = sellingPricePerUnit − variableCostPerUnit
- Break-even units = ceil(monthlyFixedCosts ÷ contributionMargin)
- Break-even revenue = breakEvenUnits × sellingPricePerUnit
- Units for target profit = ceil((monthlyFixedCosts + targetMonthlyProfit) ÷ contributionMargin)
- Days to break even = ceil(breakEvenUnits ÷ (avgMonthlySales ÷ 30))
Important assumptions
- Fixed costs stay the same in the month regardless of volume.
- Variable cost per unit is constant and includes all per-unit expenses.
- Selling price is constant, no tiered pricing or discounts.
- Days to break even assumes sales are spread evenly across 30 days.
- This is a pre-tax view and excludes platform fees unless you include them in variable cost.
- Break-even units are rounded up to the next whole unit.
Worked example
Monthly subscription box
Fixed costs are $2,000 for warehouse, software, and contractor. Variable cost is $8 per box, you charge $29.99. You want $1,000 profit and average 200 sales per month.
FAQ
Common questions
Related tools
Continue planning
Profit Margin Calculator
Calculate gross and net profit, margin, markup, and break-even price from your real product costs and selling price.
Markup Calculator
Convert product cost and markup percent into a selling price, and see markup versus margin instantly.
ROI Calculator
Measure return on investment for inventory, ads, tools, or any business spend and see payback time.
Revenue Calculator
Project gross, net, and recurring revenue from price, volume, refunds, fees, and subscriptions.
Future recommendations
Tools worth comparing later
This section is reserved for editorial affiliate recommendations. Nothing here is a live endorsement or paid placement yet.
Accounting
Bookkeeping software for product sellers
Track fees, COGS, and payouts in one place.
Link coming later
Email marketing for repeat buyers
Useful after you have a list and offer flow.
Link coming later
Print on demand
POD partners and mockup tools
Compare base costs before you launch designs.
Link coming later
Platform roadmap
Explore More Seller Tools
We are building a complete business decision platform. These planning and forecasting tools are coming next — each will reuse the same transparent, seller-focused framework.
Profit Planner
Set monthly income goals and work backward to required sales, pricing, and margin targets.
Inventory Planner
Calculate reorder points, inventory investment, and stockout risk before you place POs.
Pricing Optimizer
Test pricing scenarios to find the sweet spot between conversion and profit per order.
ROI Planner
Model return on ads, influencer campaigns, and marketplace promotions.
Business Goal Planner
Turn annual revenue goals into daily sales targets, listing counts, and traffic needs.
Sales Forecast
Project next quarter revenue from current average order value and growth assumptions.
Pricing Strategy Tool
Compare charm pricing, premium pricing, and anchor strategies on the same product.
Product Launch Calculator
Budget a new product launch including samples, fees, ads, and break-even timeline.