Turn cost into a price you can defend.
Markup is how much you add on top of cost. Margin is that same profit measured against the price you charge. Mixing them up is a common way shops underprice without noticing.
Enter cost and a markup % to get a selling price — or type the price you already use and read the markup and margin side by side. Shipping and fees are separate; add them into cost if you want them in the math.
What you pay
Added on top of cost
What you charge
Estimates only — not tax or accounting advice. Double-check before you print price tags.
How it's calculated
Say a jar costs you $20 and you want a 50% markup. You add half the cost on top: 20 × 1.5 = $30. That $10 of profit is 50% of your cost — but only 33.3% of the $30 you charge.
Keystone (2×) is a 100% markup and a 50% margin. Specialty goods often need 2.5–3× before fees and slow turns. Use the slider or A/B compare to see how a small price change moves margin before you print tags.
price = cost × (1 + markup ÷ 100) margin = (price − cost) ÷ price × 100