Free tool · nothing stored
Profit & margin calculator
Work out what is actually left after marketplace fees, shipping and ad spend. Everything runs in your browser — nothing you type is sent to us or saved.
Your numbers
—Fees / unit
—Profit / unit
—Margin
—ROI
—Monthly profit
—Break-even ad
How each number is worked out
- Fees = sell price × fee %
- Profit / unit = sell − unit cost − shipping − fees − ad spend
- Margin = profit ÷ sell price
- ROI = profit ÷ (unit cost + shipping)
- Break-even ad = the most you can spend per unit before profit hits zero
Want the keywords too?
The full workspace pairs this calculator with keyword hunts across five sources, supplier comparison by landed cost, and CSV export — in 10 marketplaces.
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