Free, no sign-up
Break-even and margin calculator
Find out how many units you need to sell for the business to pay off, what your margin is and when your initial investment comes back.
Result
Fill in the price, variable and fixed costs.
The calculator runs only in your browser. Values are kept in the page address so you can share the calculation; nothing is sent to our server.
How the break-even point is calculated
The break-even point is the number of units at which revenue exactly equals all costs — no loss, no profit. Every additional unit sold makes money.
Break-even (units) = fixed costs ÷ (price per unit − variable cost per unit)
Example: you sell T-shirts for CZK 490, each costs you CZK 190 and you pay CZK 30,000 in fixed costs per month. Each T-shirt leaves CZK 300 to cover fixed costs, so break-even is 30,000 ÷ 300 = 100 T-shirts a month.
Margin or markup?
Margin is the profit per unit as a share of the selling price: (price − cost) ÷ price. Markup is the same profit relative to cost: (price − cost) ÷ cost. A T-shirt selling for CZK 490 that costs CZK 190 has a 61% margin but a 158% markup. When negotiating with retailers, know which number is being discussed.
What to do if break-even is too high
You have three levers: raise the price (often the most effective), lower the variable cost per unit (better supplier, larger batches), or cut fixed costs. Try a 10% price increase in the calculator — break-even usually drops more than you would expect.