E-commerce ROI Calculator - Break-Even & Profit Analysis

E-commerce ROI Calculator — Break-Even & Profit Analysis Instantly calculate your true break-even ROI and profit margin. Designed for online sellers, dropshippers, and e-commerce entrepreneurs who need quick, accurate profit analysis. 📊 CORE FEATURES: • Break-Even ROI Calculation — Know exactly what ROI you need to avoid losing money on ads. • Dual Profit Metrics — View both accounting margin and contribution margin (after all variable costs: shipping, commission, tax, packaging). • Fee Breakdown — See every cost item clearly: product cost, shipping, platform commission, tax, and other expenses. • Ad Performance Comparison — Enter your actual ad spend and revenue to compare against your break-even ROI. Visual progress bar shows if you're profitable. • Multi-Language Support — English and Chinese (中文) switchable with one click. • Clean, Apple-Inspired Design — No clutter, just numbers that matter. • Completely Free — No sign-up, no data collection, works offline. 📐 FORMULA USED: - Accounting Margin = (Price - Product Cost) / Price - Contribution Margin = (Price - Product Cost - Shipping - Commission - Tax - Other) / Price - Break-Even ROI = 1 / Contribution Margin This ensures you never underestimate your true advertising costs. 👥 PERFECT FOR: • Amazon / eBay / Shopify sellers • Taobao / Tmall / Pinduoduo / Douyin sellers • Dropshipping entrepreneurs • Digital marketing specialists • E-commerce students and analysts 🔒 PRIVACY: All calculations happen locally in your browser. No data is collected, stored, or transmitted. Your financial data stays private. 💡 TIP: Enter your product cost, selling price, shipping, platform commission rate, tax rate (VAT, etc.), and other per-unit costs. The tool instantly shows your break-even ROI and contribution profit. Expand the ad comparison section to see if your current campaigns are profitable. ⚡ Quick Start: 1. Click the extension icon in your toolbar 2. Enter your product details 3. Get your break-even ROI instantly 4. (Optional) Enter ad spend and revenue for comparison Start calculating your true profitability today!