Profit margin calculator that shows what you keep after fees
Type any two of cost, price, profit, margin % or markup % and the calculator fills in the rest. Then it goes further than a one-line margin form: it takes marketplace and payment fees, a fixed per-order fee and shipping off the price to show your net margin and break-even price, finds the price you need for a target net margin, shows what a discount really costs (the extra sales needed to earn the same profit), and adds up a whole product table with a weighted margin.
Worked example: an item that costs 60 and sells for 100, with a 10% marketplace fee, a 0.30 fixed fee and 5 shipping
| Result | Value |
|---|---|
| Gross margin | 40% |
| Markup | 66.67% |
| Fees per order | 10.30 |
| Net profit per order | 24.70 |
| Net margin after fees | 24.7% |
| Break-even price | 72.56 |
| Profit on 10 orders | 247.00 |
| Margin after a 20% discount | 25% |
| Extra sales needed to keep the same profit | +100% |
Source: Computed with the app's own engine (products/profit-margin-calculator/web/margin.js: solve, net and discount) run with node on 10 Oct 2026; the same case is in tests/margin.test.js. Amounts in any currency.
Profit Margin Calculator vs the alternatives
Published prices, each checked on the date shown; prices change, so confirm on each site.
| Product | Price | Free | Checked |
|---|---|---|---|
| Profit Margin Calculator | free; Pro scenario CSV $3 once | all calculations, product table and its CSV | live |
| Calculator Soup (Margin Calculator) | free web tool (no paid tier shown) | free | 2026-10-10 |
| PCalc (App Store) | $9.99 one-time; tip in-app purchases $0.99, $1.99, $4.99, $9.99 | no free version shown | 2026-10-10 |
| Soulver 3 | $59 one-time purchase; or in Setapp at $15/month | 60-day free trial | 2026-10-10 |
Why teams pick Profit Margin Calculator
- Any two values solve the rest, so you can start from the price you want or the margin you need.
- Fees, a fixed per-order fee and shipping come off before you see the net margin, with the break-even price.
- Shows margin and markup side by side: a 40% margin is a 66.67% markup, the mix-up that underprices most products.
- Free with no sign-up and no ads; the optional Pro export is $3 once, not a subscription. Works offline as an installable app.
How it works
- Open the calculator and type any two values, for example cost and price.
- Add your marketplace fee %, fixed fee and shipping to see net margin and break-even.
- Try a target margin or a discount, or list several products in the table and download the CSV.
FAQ
Is the profit margin calculator free?
Yes. All calculations, the product table and its CSV are free with no sign-up. Pro ($3 once) only adds the one-file CSV of the fee, target, discount and chart tables.
What is the difference between margin and markup?
Margin is profit divided by price; markup is profit divided by cost. Cost 60 and price 100 is a 40% margin but a 66.67% markup. The calculator always shows both.
Why not Calculator Soup?
Its margin calculator is free and solid for one item. This one also takes fees, fixed fees and shipping off, finds a target-margin price, prices discounts and totals a product table.
Why not a paid calculator app like PCalc or Soulver?
They are general calculators sold at $9.99 and $59. This one does only pricing maths, is free in the browser, and the optional export is $3 once.
Limits?
Fees are entered by you; there are no built-in marketplace fee presets yet. Results are planning estimates, not accounting or tax advice.