Dropshipping Profit Calculator
Dropshipping's Thin Margins Live or Die in the Details
Dropshipping strips out inventory risk by shipping directly from supplier to customer, but that convenience comes stacked with per-unit costs that traditional retail sometimes avoids: supplier cost, shipping, platform fees, and often heavy ad spend to drive traffic in the first place. Because margins in this model tend to be thin, a small miss on any one line item can turn an apparently profitable product into a losing one at scale.
The Formula
Total Profit = Profit per Unit × Quantity
Running the calculation per unit first, then multiplying by quantity, keeps the underlying unit economics visible even when looking at totals across a batch of sales.
Where This Matters
- Product validation — before committing ad budget to a new product, running the full per-unit cost stack shows whether there's enough margin left to survive realistic ad costs.
- Supplier comparison — the same product from two different suppliers, at different cost and shipping terms, can produce meaningfully different total profit at scale.
- Scaling decisions — because total profit is a straight multiple of profit per unit, this calculator makes clear how thin per-unit margins compound — or fail to — as order volume grows.
Worked Example
| Line item | Amount |
|---|---|
| Selling price | $29.99 |
| Supplier cost | $8.50 |
| Shipping | $3.50 |
| Platform fees | $1.20 |
| Ad spend | $6.00 |
| Profit per unit | $10.79 |
| Total profit (150 units) | $1,618.50 |
Figures computed directly from the calculator's own formula: $29.99 − $8.50 − $3.50 − $1.20 − $6.00 = $10.79 per unit, × 150 units = $1,618.50 total.
How to Use This Calculator
- Enter the Selling Price per Unit.
- Enter the Supplier Cost per Unit.
- Enter the Shipping Cost per Unit.
- Enter the Platform Fees per Unit.
- Enter the Ad Spend per Unit.
- Enter the Quantity Sold (defaults to 1).
- Select Calculate to get profit per unit and total profit.
Related Calculations
Compare the same math on a different fulfillment model with the Amazon FBA Fee Calculator, or see how much it costs to generate each sale with the Customer Acquisition Cost Calculator.