A retailer told me once that his whole store ran on a 50% markup and his margins were great. His margins were 33.3%. He had been reading his own pricing wrong for years, and he is not unusual. Markup and margin describe the same profit from two different bases, and the gap between them is where pricing errors live. Bookmark this chart, because you will need it every time someone hands you a percentage without saying which one it is.
The conversion chart
Markup divides profit by cost. Margin divides profit by selling price. Since selling price is always bigger than cost, markup is always the bigger number. Here is every 10 points of markup converted:
| Markup | Margin it produces | What it means on a $60 cost |
|---|---|---|
| 10% | 9.09% | $66.00 price, $6.00 profit |
| 20% | 16.67% | $72.00 price, $12.00 profit |
| 30% | 23.08% | $78.00 price, $18.00 profit |
| 40% | 28.57% | $84.00 price, $24.00 profit |
| 50% | 33.33% | $90.00 price, $30.00 profit |
| 60% | 37.50% | $96.00 price, $36.00 profit |
| 70% | 41.18% | $102.00 price, $42.00 profit |
| 80% | 44.44% | $108.00 price, $48.00 profit |
| 90% | 47.37% | $114.00 price, $54.00 profit |
| 100% (keystone) | 50.00% | $120.00 price, $60.00 profit |
The row worth memorizing is the last one: a 100% markup, doubling your cost, is only a 50% margin. If you remember nothing else, remember that doubling the price still leaves half of every sale as cost recovery.
The two formulas that cover every case
You do not need the chart once you have these two lines:
Margin = markup / (1 + markup). A 50% markup becomes 0.50 / 1.50 = 33.3% margin.
Markup = margin / (1 - margin). A 40% margin target needs 0.40 / 0.60 = 66.7% markup.
And the one I use most in real pricing work: price = cost / (1 - margin). A $60 item at a 40% target margin is $60 / 0.60 = $100. The wrong move, the one that costs people real money, is multiplying the cost by the margin: $60 times 1.40 is $84, and $84 is a 28.6% margin, not the 40% you asked for. Divide, do not multiply. That division is the single most useful habit in this whole article.
Where the mix-up actually bites
Negotiations. A buyer asks for a 40% discount. You say that leaves you a 40% margin. Those are not the same number: the discount is measured against the original price, the margin against the discounted one. If you concede the discount thinking your margin math holds, you just gave away more than you meant to.
Performance goals. Businesses set profitability goals in margin, because investors and lenders think in margin. If you price with markup and report in margin, your forecasts will be systematically optimistic. The lawn-and-landscape industry published a brutal version of this: a 10% markup on $10,000 of cost produces $1,000 of profit, which is only a 9.09% margin. Lose 0.91 points on a million in annual sales and that is $9,100 a year. Over a 30-year career, $273,000. Small percentages times big numbers are big numbers.
Fixed-dollar markups. Adding $30 to every item regardless of cost feels fair and consistent, and it is neither. A $30 markup on a $100 product is a 23% margin. On a $1,000 product it is under 3%. Same dollar amount, wildly different profitability. If you want consistent margins, price from the margin down, not from the cost up.
The pairs worth knowing by heart
A handful of pairs show up over and over in real pricing conversations. I keep these on mental speed dial: 25% markup is 20% margin. 50% markup is 33.3% margin. 66.7% markup is 40% margin. 100% markup is 50% margin. And 200% markup is 66.7% margin. With those five and the two formulas, you will never be fooled by a bare percentage again.
Convert in both directions instantly: Markup vs Margin Calculator. Enter any cost, price, markup, or margin and get the full breakdown with the correct price for your target.
The short answer
A markup is always a bigger number than the margin it produces, because markup divides profit by cost and margin divides it by the larger selling price. A 50% markup is a 33.3% margin, a 100% markup is a 50% margin, and the two conversion formulas, margin = markup / (1 + markup) and price = cost / (1 - margin), cover every pricing case you will ever hit. Any time someone quotes a percentage without naming it, ask which one it is first.
Related reading: "I Want a 50% Margin": The Markup Mistake Costing You 17 Points of Profit and Cost-Plus Pricing Done Right: Price From Your Target Margin.
One practical walkthrough a week: subscribe to the newsletter.