%
Optional.
Output
Output will appear here
Click in the output to select all text
Product Margin Calculator
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This Product Margin Calculator works out your real profit margin and markup after marketplace or platform fees are deducted — a percentage-based fee (like a typical marketplace referral fee) plus an optional fixed fee per sale (like a per-order handling charge). Enter your product cost, selling price, and fee structure, and get net revenue after fees, profit per unit, margin percentage, and markup percentage all at once. It's built for sellers on marketplaces like Amazon, Etsy, eBay, or Shopify who need to see their actual take-home profit, not just the gross selling price. Everything runs locally in your browser; no pricing data is uploaded. Scroll down to enter your numbers.
Features
- Calculates net revenue after percentage and fixed fees
- Shows both profit margin and markup percentage
- Works for any marketplace's fee structure
- Instant recalculation as you adjust inputs
Why use this product margin calculator?
- Reveals true profit after platform fees, not just gross price
- Useful for pricing decisions across multiple marketplaces
- Fully private — nothing uploaded
- Free with unlimited use
Frequently asked questions
What's the difference between margin and markup?
Margin is profit as a percentage of the selling price; markup is profit as a percentage of the cost — the same profit amount produces two different percentages depending on which base you use.
What fee structure should I enter?
Check your specific marketplace's seller fee schedule — most charge a percentage referral/commission fee, and some add a small fixed fee per transaction; enter both fields to match your platform.
Does this include shipping costs?
No, shipping cost isn't a separate field here; either fold it into your product cost or subtract it manually from the net revenue result.
Can I use this for multiple marketplaces?
Yes, run the calculation once per marketplace with that platform's specific fee percentage and fixed fee to compare net profit across them.
Why is markup higher than margin for the same sale?
Because markup divides profit by the (smaller) cost while margin divides it by the (larger) selling price — markup will always be numerically higher than margin when there's a profit.