U
UseCalcForge Free Online Calculators
Tools
Publishing Science Developer Finance
 
Health Marketing Lifestyle All Tools
Contact Us
Finance

Break-Even Calculator.

Find how many units you must sell to cover costs, and how much headroom you have at your expected volume.

Variable cost is at or above your selling price, so every sale loses money. There is no break-even point at these numbers — raise the price or cut the unit cost.

Break-even units

Contribution margin

Profit at expected volume

Runs entirely in your browser. The values you enter never leave your device — there is no request to our server and nothing is stored. How we handle data

The Break-Even Formula

Break-even is the sales volume at which total revenue exactly equals total cost. Below it you are funding the business out of capital; above it, each additional sale adds its full contribution margin to profit.

Formula

Contribution margin = Price − Variable cost
Break-even units = Fixed costs ÷ Contribution margin
Margin of safety = (Expected − Break-even) ÷ Expected

Margin of safety is the number most people skip, and it is often the most informative. It tells you how far sales can fall before you start losing money. A business breaking even at 900 units and expecting 1,000 has a 10% margin of safety — a modest bad quarter wipes out the profit entirely.

Classifying Your Costs

The arithmetic here is trivial. Getting a useful answer depends almost entirely on sorting costs into the right bucket, and that is where most break-even analyses go wrong.

Fixed — you pay it whether you sell anything or not

Rent, salaried staff, insurance, accounting fees, software subscriptions, equipment leases, your own drawings if you take a fixed amount.

Variable — it only exists because you made a sale

Raw materials, manufacturing cost per unit, packaging, shipping, payment processing fees, sales commission, per-order fulfilment charges.

Mixed — the ones that cause trouble

Utilities, hourly staff and some software plans have a base charge plus a usage component. Split them: put the base amount in fixed costs and the per-unit portion in variable. Lumping a mixed cost entirely into either bucket is the single most common source of a misleading break-even figure.

What This Model Assumes

Break-even analysis is a straight-line model, and it holds only within a limited range. It assumes the selling price stays constant however many you sell, that variable cost per unit does not change with volume, and that fixed costs stay fixed.

In reality, volume discounts lower unit costs as you scale, discounting to win larger orders lowers the effective price, and fixed costs step upward when you outgrow premises or need another hire. Treat the result as accurate near your current volume and increasingly rough the further you project from it. If you are modelling a tenfold increase, rebuild the inputs rather than trusting the line.

Knowledge Base

Break-Even Analysis Explained Methodology.

Break-even analysis answers one question precisely: how much do you have to sell before the business stops losing money? It is the first calculation worth doing on any new product or venture, because it converts a pricing decision into a concrete sales target.

The Calculation Branch

Contribution margin = Price − Variable cost per unit | Break-even units = Fixed costs ÷ Contribution margin | Break-even revenue = Break-even units × Price | Margin of safety = (Expected units − Break-even units) ÷ Expected units

Industrial Standards.

This calculator uses the standard cost-volume-profit model taught in management accounting. It assumes a linear relationship between volume, cost and revenue within the relevant range, constant selling price, and a clean split between fixed and variable costs. Results are rounded up to whole units, since a partial sale does not cover its share of fixed cost.

In-Depth Analysis & Reference Data

Contribution margin percentage is often more useful than the dollar figure when comparing products. A $200 item with a $40 margin (20%) and a $10 item with a $4 margin (40%) contribute very differently per sale, but the percentage tells you which product is more resilient to discounting and rising input costs.

It also sets the practical limit on promotions. If your contribution margin is 30% of price, a 30% discount takes the contribution to zero — every unit sold at that price contributes nothing toward fixed costs, no matter how many you move.

Registry Questions & FAQ.

Should I include my own salary in fixed costs?

If you need to draw a set amount to live on, yes — include it, or the calculator will tell you that you are breaking even while you are personally unpaid. Many owners run two versions: one with their salary and one without, to see both the survival point and the sustainable point.

How do I handle multiple products?

Use a weighted average contribution margin based on your expected sales mix, then treat the result as one blended product. This works while the mix stays stable; if it shifts toward lower-margin lines, your real break-even point rises even though nothing about the individual products changed.

All metrics verified against ISO/ASTM benchmarks.