Your numbers stay on your computer. This tool runs entirely in your browser. GlassJar never receives or stores the figures you enter.
This tool performs arithmetic on numbers you supply. It does not provide pricing, accounting, tax, or legal advice. See the full Tool Notice and Terms of Use.
Markup is the amount you add to an item’s cost to reach its selling price, expressed as a percentage of that cost. Buy a product for $4.25, sell it for $12.00, and you have applied a markup of 182.4%. The formula is simple: markup equals price minus cost, divided by cost, times 100. This calculator runs that arithmetic instantly, and it also runs it backward. Enter a cost and the markup you have in mind, and it produces the price. Enter a price and a markup, and it recovers the cost.
Markup is not margin, and the difference costs real money
The single most common pricing mistake a small business makes is treating markup and margin as the same number. They never are. Markup measures profit against cost; margin measures the same profit against price. A 50% markup is only a 33.3% margin. A business owner who wants a 50% margin but applies a 50% markup has underpriced every item in the catalog, and the gap widens as the percentages climb. Because the confusion is so common, this calculator always displays both figures side by side, whichever direction you solve in. If margin is the number you think in, the margin calculator presents the same engine with margin front and center.
One product is a calculation. All your products are a pricing sheet.
Most markup calculators stop at a single answer. This one lets you build the document you actually need: a pricing sheet covering every product you sell. Add a row per product with its name, cost, and price, and the sheet computes markup, margin, and profit per unit for each row. Add optional unit counts and it extends to total profit per product, then rolls everything up into totals for revenue, cost, profit, and your blended margin across the whole catalog. That last figure is one a single-product calculator can never show you, and it is often the most revealing: a couple of low-markup items selling in volume can quietly pull the whole business’s margin well below what the price list suggests.
When the sheet says what you want it to say, download it as a PDF, an Excel workbook, or a CSV, or print it. It is a document worth keeping, sending to a business partner, or bringing to a meeting with your accountant.
Your numbers never leave your browser
Cost data is competitively sensitive, so this tool is built to run entirely on your device. Every calculation and every file download happens in your browser. GlassJar never receives, stores, or sees the figures you type. If you want your work to survive a page refresh, switch on the save toggle and it is stored only on your own device, with a clear button that erases it whenever you choose.
Where markup fits in the bigger pricing picture
Markup tells you what each sale contributes, but it cannot tell you how many sales you need. That depends on the fixed costs the business carries regardless of volume. The break-even calculator picks up exactly where this page leaves off: give it your fixed costs, price, and per-unit cost, and it shows how many units cover the bills, and what profit looks like on either side of that line.
Frequently Asked Questions
How do I calculate markup?
Subtract the cost from the selling price, divide the result by the cost, and multiply by 100. An item that costs $10 and sells for $15 carries a 50% markup. The calculator on this page does this automatically and also solves for price or cost when markup is the number you already know.
What is the difference between markup and margin?
Markup expresses profit as a percentage of cost, while margin expresses the same profit as a percentage of price. A $10 cost sold at $15 is a 50% markup but a 33.3% margin. The two are always different numbers for the same sale, and quoting one while meaning the other leads to underpricing.
How do I convert markup to margin?
Divide the markup percentage by 100 plus the markup percentage, then multiply by 100. A 50% markup converts to 50 divided by 150, which is a 33.3% margin. This calculator converts in both directions automatically when you fill in either field.
Can I calculate markup for more than one product at once?
Yes. This tool includes a pricing sheet mode where each product gets its own row with cost, price, and optional unit volume. It computes markup, margin, and profit for every row, plus totals and a blended margin across all products, and the finished sheet downloads as a PDF, Excel, or CSV file.
Is the data I enter sent to GlassJar?
No. All calculation happens in your browser and your figures are never transmitted. The only thing GlassJar receives is your email address, and only if you choose to download a file.
