Markup vs Margin: What 3D Print Sellers Get Wrong

The definitions

Markup is the percentage you add on top of your cost to get your selling price. It is calculated relative to the cost.

Margin (also called profit margin or gross margin) is the percentage of your selling price that is profit. It is calculated relative to the selling price.

The key difference is what the percentage is calculated from. Markup is a percentage of cost. Margin is a percentage of revenue. Same number, different base, very different result.

A simple example

You print a phone stand that costs £10 to produce (material, electricity, labour, and overheads combined).

Same 50% number. One gives you £15, the other gives you £20. That is a 33% difference in your selling price — simply from choosing the wrong word.

The formulas

A common pitfall: you cannot have a margin of 100% or higher. A 100% margin would mean the entire selling price is profit and the cost is zero — which is impossible. You can, however, have a markup of 100%, 200%, or any number. This is another reason the two get confused.

Why sellers confuse them

Several reasons come up repeatedly:

• Common language is loose. “I want a 50% profit” could mean either. In everyday conversation, most people mean markup but say margin.
• Forums and YouTube rarely clarify. You will see advice like “price at 2× your cost for a 50% margin.” That is wrong. 2× cost is a 100% markup, which produces a 50% margin. The maths works out, but the terminology is backwards, and people repeat it incorrectly.
• Spreadsheets do not enforce the distinction. If you type 50% into a cell, it does not know whether you meant markup or margin. The formula you write determines the result, and most people write the markup formula.

Conversion reference

Here is how common markup and margin percentages relate to each other:

Notice that markup percentages are always higher than their equivalent margin percentages. A 100% markup produces only a 50% margin. If you think you are working with a 50% margin but you are actually applying a 50% markup, your true margin is just 33.3% — and your profit per item is lower than you expected.

Which should you use?

Neither is inherently better — they are just two ways of expressing the same relationship between cost and price. What matters is that you know which one you are using and that your tool calculates it correctly.

Markup is more intuitive for most people. “I want to add 50% on top of my cost” is a natural way to think about pricing. It is easier to calculate in your head.

Margin is more useful for financial analysis. It tells you what percentage of each sale is profit, which makes it easier to compare across products with different cost bases. Retailers, accountants, and business advisors typically think in terms of margin.

If you sell 3D prints on Etsy as a side business, markup is probably the more natural choice. If you are running a full-time operation and tracking profitability across product lines, margin gives you a clearer picture.

A real-world example: the articulated dragon

You print an articulated dragon. Total production cost (material, electricity, labour, overheads, waste) comes to £8.50.

The difference between £13.60 and £21.25 is enormous. On 100 sales, that is £765 in lost profit if you used markup when you meant margin.

How 3D PriceTag handles this

The 3D PriceTag calculator lets you switch between markup and margin with a single tap. Enter your percentage, and the calculator applies the correct formula — no ambiguity, no spreadsheet errors. The breakdown shows your exact profit in both pounds and percentage, so you always know what you are actually earning.