Break-even chart maker
A break-even chart maker draws the fixed cost, total cost, and revenue lines and marks where revenue overtakes cost — the break-even point. Enter your fixed cost, unit price, and unit variable cost and the chart is generated instantly, right in your browser. Nothing is uploaded.
How it works
The chart plots money (y-axis) against units sold (x-axis) using three lines:
| Line | Formula | What it shows |
|---|---|---|
| Fixed cost | y = Fixed cost | Costs that don't change with volume |
| Total cost | y = Fixed cost + Variable cost × units | Fixed plus variable cost combined |
| Revenue | y = Unit price × units | Money in as you sell more |
Where revenue crosses total cost is the break-even point: below it you make a loss (shaded red), above it you make a profit (shaded blue).
Steps
- Enter your total fixed cost.
- Enter the unit price (must be greater than 0).
- Enter the unit variable cost.
- Optionally set max units to control the x-axis; leave it blank to auto-fit.
- Read the chart plus break-even units, break-even revenue, and contribution margin.
Example: fixed cost $1,000,000, unit price $5,000, variable cost $3,000 → contribution margin $2,000/unit, break-even at 500 units ($2.5M revenue), marked on the chart.
Chart maker vs. plain calculator
If you only need the number, the break-even calculator is enough. Use this chart maker when you need the picture — the crossing point and profit/loss zones — for a pitch deck, a pricing review, or an internal explainer. The chart is rendered as an SVG entirely on your device, so your numbers never leave the browser.
