Break-Even Units Calculator

What formula does this tool use?

Contribution per unit = selling price − variable cost per unit. Break-even units = fixed costs ÷ contribution per unit, rounded up to the next whole unit. Break-even revenue = those whole units × selling price. The contribution margin ratio shown beside them is contribution ÷ price. Units are for the same period that your fixed costs cover, whether a month or a year.

Why is the answer always a whole number?

You cannot sell part of a unit, so the division is rounded up, never down. With $30,000 of fixed costs and a $31.00 contribution the division gives about 967.7, and the tool shows 968. Because of the rounding, break-even revenue is 968 × $49 = $47,432.00, slightly above $30,000 ÷ 63.3%, which would be about $47,419.

What happens if price is lower than, or equal to, variable cost?

The tool reports the contribution per unit, with a minus sign if negative (−$11.00 for a $49 price and $60 cost), then states that you cannot break even because price is at or below variable cost. Break-even revenue is shown as N/A. No amount of volume can cover fixed costs when every sale adds nothing or loses money.

What if my fixed costs are zero?

With a positive contribution the break-even is 0 units and $0.00 of revenue, since there is nothing to recover. If the contribution is zero or negative the “cannot break even” message appears whatever the fixed costs are. Negative entries for any of the three inputs are treated as zero.

What does it not include?

It has no profit target, tax, discount, financing cost or sales-mix input, and every unit is assumed to sell at the same price and cost. Fixed costs are assumed not to step up at some volume, and it handles one product, so a business with several products cannot read a single result as its overall break-even.

Which costs go into variable and which into fixed?

Put anything that rises with each unit sold in variable cost: materials, packaging, per-unit shipping, card fees and commissions that depend on the sale. Put the costs that stay the same over the period, such as rent or salaries, in fixed costs. A cost that is partly both should be split between the two boxes; the tool cannot decide that for you.

How can I see how much a price change matters?

Change only the price and read the break-even again. With $30,000 fixed and an $18 variable cost, a $49 price needs 968 units; the contribution margin is $31.00. Each additional dollar of price adds a dollar of contribution per unit, so the required units fall as the price rises. Check that the new price is plausible for your market before relying on the result.