Fixed costs, variable cost per unit, selling price per unit—units to break even.
Contribution per unit = price − variable cost; break‑even units = ceil(fixed cost ÷ contribution). If contribution ≤ 0 the tool errors out—there is no finite break‑even with that pricing.
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.
Educational estimate only.