Markup to margin formula
Convert markup with margin = markup ÷ (1 + markup), using decimal rates. A 50% markup is 0.5 ÷ 1.5, which equals a 33.33% gross margin.
Convert markup to margin, or margin back to markup, and see why the same product profit creates two different percentages.
Converted rate
33.33%50% markup becomes gross margin.ONE PROFIT, TWO BASES
Markup looks back at cost. Margin looks forward from selling price. The dollars stay the same while the percentage changes.

THE FIELD NOTES
Use the result now, then read the practical notes for assumptions, examples, limitations, and the choices behind it.
$50 cost · $75 selling price · 50% markup · 33.33% margin
Convert markup with margin = markup ÷ (1 + markup), using decimal rates. A 50% markup is 0.5 ÷ 1.5, which equals a 33.33% gross margin.
This margin to markup calculator uses markup = margin ÷ (1 − margin), with decimal rates. A 25% margin is 0.25 ÷ 0.75, which equals a 33.33% markup.
Use the margin vs markup calculator to see one $25 profit from both bases. On a $50 cost and $75 sale, it is 50% markup but 33.33% margin.
The formula does not decide which product cost, packaging, platform fees, discounts, returns, taxes, or overhead belong in your pricing model.
THE PRODUCT IS NEXT
Convert markup with margin = markup ÷ (1 + markup), using decimal rates. A 50% markup is 0.5 ÷ 1.5, which equals a 33.33% gross margin.
Markup measures profit against cost. The calculator keeps full precision and rounds only the displayed percentage.
This margin to markup calculator uses markup = margin ÷ (1 − margin), with decimal rates. A 25% margin is 0.25 ÷ 0.75, which equals a 33.33% markup.
A 100% margin cannot produce a finite markup because the formula would divide by zero, so that boundary is rejected.
Use the margin vs markup calculator to see one $25 profit from both bases. On a $50 cost and $75 sale, it is 50% markup but 33.33% margin.
Keep the label and denominator together whenever pricing decisions move between suppliers, merchandisers, and finance teams.
The formula does not decide which product cost, packaging, platform fees, discounts, returns, taxes, or overhead belong in your pricing model.
Use one consistent cost basis, then test the resulting selling price against customer value and the real marketplace ledger.
Divide markup as a decimal by one plus that markup. A 50% markup becomes a 33.33% gross margin.
Divide margin as a decimal by one minus that margin. A 25% margin becomes a 33.33% markup.
Markup divides profit by cost, while margin divides the same profit by selling price, so their percentage bases differ.
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