# Break-Even Units Calculator

> Break-even units calculator: find how many units you must sell to cover fixed costs, plus required revenue and margin of safety. Free, runs locally, no signup.

- **Canonical URL:** https://boringtoolskit.com/break-even-units-calculator/
- **Category:** Seller & Business
- **Evidence level:** authored-methodology
- **Reviewed:** July 2026
- **Last verified:** 2026-09-20
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

Contribution per unit = price − variable cost. Required whole units = ceiling((fixed costs + target profit) ÷ contribution per unit).

## Worked example

$10,000 fixed costs, $50 price, and $30 variable cost produce $20 contribution per unit and a 500-unit break-even threshold.

## Assumptions

- Price and variable cost per unit remain constant across the modeled volume.
- Fixed costs do not step upward at higher capacity levels.
- All produced units are sold; taxes, refunds, discounts, and financing are excluded unless entered in costs.

## Common questions

### What is contribution margin?

Contribution margin is price per unit minus variable cost per unit. It is the amount each unit contributes toward fixed costs and profit.

### How are break-even units calculated?

Break-even units equal the fixed costs plus target profit, divided by contribution margin, rounded up to the next whole unit.

### What if price per unit is less than or equal to variable cost?

The calculator returns an error because contribution margin is zero or negative, so selling more units cannot cover fixed costs.

## Related tools

- /profit-margin-markup-calculator/
- /commission-calculator/
- /marketplace-ad-break-even-calculator/

## Sources

- [Break-even point](https://www.sba.gov/business-guide/plan-your-business/calculate-your-startup-costs)

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