SourceCalc - 1688 Profit Calculator

About

SourceCalc helps cross-border sellers instantly see whether a product on 1688.com is actually profitable — before placing an order.

**The problem:** A product listed at ¥15 on 1688 looks like it has huge margins. But after international shipping, customs duty, exchange rate conversion, and seller platform fees, the real margin is often 20-30% lower than expected.

**How it works:**
1. Browse any product page on 1688.com
2. SourceCalc auto-detects the product price
3. Enter your selling price and adjust settings
4. See the full cost breakdown and true profit margin instantly

**What it calculates:**
- Sourcing cost converted at real-time exchange rates
- International shipping estimates (sea and air freight)
- Customs duty based on your product category
- Platform seller fees for your marketplace
- Net profit, margin percentage, and ROI

**Settings you can customize:**
- Target market (7 countries supported)
- Selling platform and fee structure
- Shipping method and package weight
- Customs duty rate
- Product quantity for total investment view

All calculations run locally in your browser. No data is collected or sent to any server. Free to use.