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Grow an ecommerce business
Connect contribution margin, marketplace fees, shipping, and advertising economics.
Your path
One decision, connected steps.
Work in order or open only the calculation you need. Progress stays privately on this device, without an account.
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0%- 01Business
Ecommerce Profitability
Build a transparent ecommerce profitability scenario from values you control.
Open calculator - 02Business
Marketplace Fee
Build a transparent marketplace fee scenario with labeled inputs, immediate results, and no hidden assumptions.
Open calculator - 03Business
Ecommerce Shipping
Build a transparent ecommerce shipping scenario with labeled inputs, immediate results, and no hidden assumptions.
Open calculator - 04Business
Advertising Break-Even
Build a transparent advertising break-even scenario with labeled inputs, immediate results, and no hidden assumptions.
Open calculator
Before deciding
Check the complete picture.
- Measure returns and fees per order.
- Separate shipping revenue from shipping cost.
- Set ad limits from contribution, not gross revenue.