Business & Finance
Plain business arithmetic — the pricing math every seller needs and half of them get backwards. Currency-agnostic, no province or tax logic; just cost, price and profit.
Profit margin and markup are two views of the same thing: the gap between what something costs you and what you sell it for. Margin measures that gap against the selling price; markup measures it against the cost. A 25% margin is a 33% markup — same profit, different base — and mixing them up is the single most common pricing mistake. These two calculators show both at once so you never have to guess which one you're looking at.