SellerProfit Lab — Profit & Pricing Calculator for Online Sellers

Know your profit before you sell

SellerProfit Lab is an offline, browser-based calculator for estimating profit on online products. Enter your selling price, product costs, selling fees and advertising assumptions to explore possible margins before listing.

Included

• Interactive downloadable HTML calculator
• Profit and cost estimates
• Pricing scenario comparisons and break-even estimates
• Browser-based scenario saving and CSV export
• Basic usage instructions

Beta version: This is a standalone tool with manual data entry, not a Shopify or Etsy integration. It does not automatically import orders or fees. Calculations are estimates, not tax or accounting advice. A modern desktop browser is recommended.

Digital download only. No physical item will be shipped.