Selling Price from Markup Calculator

What the formula says

Selling price from a markup is cost multiplied by one plus the markup: price = cost × (1 + markup). This one is multiplication, because markup is defined as a percentage of the cost you already know.

That is the entire difference from the margin version, and it is why the two formulas are so easily confused. Markup multiplies because its base is known; margin divides because its base is the answer.

The numbers, worked through

Cost $28, markup 120%. Price = 28 × 2.2 = $61.60. The profit is $33.60, which as a margin is $33.60 ÷ $61.60 = 54.5%.

So a 120% markup produces roughly a 55% margin. The conversion is markup ÷ (1 + markup): 1.2 ÷ 2.2 = 0.545.

Working the other way, a supplier offering a 40% markup is offering a 28.6% margin. If your business needs 50% margin, that supplier's terms fall well short, and the shortfall is not obvious from the numbers as quoted.

What the number leaves out

Markup percentages look larger than the margins they produce, which flatters them in negotiation. A distributor describing 60% terms sounds generous and is offering a 37.5% margin.

It also has no natural ceiling. Margin cannot exceed 100%, but markup can run to several hundred percent, which makes large markup figures hard to interpret without converting them.

Turning it into a decision

Convert to margin before evaluating anything. Margin is comparable against every other percentage in the business: advertising as a share of revenue, fulfilment, net margin, and markup is comparable against nothing.

If your suppliers or buyers work in markup, do the conversion at the boundary and keep everything internal in margin. Translating once is manageable; translating repeatedly in conversation is where the errors enter.

Keystone pricing and where it came from

The traditional retail convention of doubling the cost, keystone pricing. Is a 100% markup and therefore a 50% margin. It survives because it is easy to do in your head and because 50% has historically been roughly what a retailer needed to cover rent, staff and shrinkage.

For ecommerce it is usually too low. A physical shop's costs were rent and staff; an online shop's are advertising, fulfilment and returns, and those together commonly exceed what a 50% margin supports once profit is required.

Where keystone still works is in categories with low advertising dependence and cheap fulfilment, small light items sold to an existing audience. Where it fails is anything heavy, anything with high return rates, and anything acquired through paid traffic. Applying a rule of thumb from a different cost structure is how businesses arrive at prices that felt traditional and produce nothing.

For anyone inheriting a pricing sheet, the quickest audit is to convert every product's markup to margin and look at the spread. Products priced by different people in different years usually show a scatter that nobody intended, and the outliers at the bottom are almost always the ones where a margin target was applied as a markup.

Correcting them is rarely a matter of raising prices to where they should have been, which can be a shock to buyers. More often it is a matter of correcting them at the next cost change, when a price movement is expected anyway.