Markup Calculator

Markup prices forward. You start with what a unit cost you, add a percentage of that cost, and arrive at a shelf price. This calculator does that, then tells you the margin the resulting price actually delivers, because a pricing conversation needs both numbers.

Cost plus a percentage

An item costing 80 with a 25% markup:

• Gross profit: 20
• Selling price: 100
• Resulting margin: 20%

Selling price = cost × (1 + markup ÷ 100)

Look at the last two lines. A 25% markup gives you a 20% margin, not a 25% one. The markup is a share of the 80 cost, while the margin is a share of the 100 sale. Every markup produces a smaller margin, and the two only meet at zero.

Working backwards from a target margin

Most pricing targets are set as margins (a category manager wants 40%), but most purchasing systems apply markups. The conversion is:

markup % = margin ÷ (100 − margin) × 100

To hit a 40% margin you need a 66.67% markup. To hit 60% you need 150%: cost 18, markup 150%, price 45, margin 60%. Applying the target margin as a markup is the mistake that quietly throws off shelf prices across an entire catalogue.

Keystone and why it survives

Doubling cost, which is a 100% markup and a 50% margin, is the traditional retail default. There's nothing magic about 50%. It has stuck around because it leaves room for what comes after the shelf price: end-of-season markdowns, shrinkage, returns, and the discounts a sales team will inevitably grant. If you price a category at exactly the margin it needs, there's nothing left over to absorb any of those.

What the price doesn't cover

The markup is applied to the unit cost you enter, and that's all it knows about. Left out of the calculation:

• Payment processing. Card and platform fees of a few percent come off the sale price, not the cost, so they reduce the realised margin directly.
• Fulfilment. Picking, packing and outbound shipping, where you absorb it.
• Returns. A category with a 20% return rate needs a materially higher markup than one with 2%, and neither the returns nor the restocking cost show up here.
• Marketing. Customer acquisition cost is an operating expense, but in most online businesses it behaves like a cost of sale.
• Volume effects. Unit cost usually falls with quantity, and a single fixed cost input can't represent a tiered supplier price list.

Treat the output as a starting price. What the market will bear is a separate question, and if the markup produces an uncompetitive price, take that as a signal about your cost base and don't publish it.

The rest of the pricing set

To go the other way, from a known cost and price to the margin they imply, use the profit margin calculator. To check how deep a promotion can go before the margin disappears, use the discount calculator. To find the volume that covers your fixed costs at the price you've set, use the break-even calculator.