Futureproof
Free Calculators

Know Your Real Profit Before You Sell

Free fee calculators for Amazon, Shopify, Etsy, eBay, and 7 more marketplaces. Stop guessing your margins. Calculate your exact fees and profit per sale.

Know your cash cushion: try the Sleep Well Number calculator.

How It Works

Three steps to understand your real profit

Step 1

Pick Your Marketplace

Choose from 11 major ecommerce platforms including Amazon, Shopify, Etsy, eBay, and more.

Step 2

Enter Product Details

Input your product price, cost of goods, and shipping cost. Select a category if applicable.

Step 3

See Your Real Profit

Get an instant breakdown of all marketplace fees, your net profit, and profit margin percentage.

Fee Calculators

Choose Your Marketplace

Calculate fees and profit margins for any of these 11 ecommerce platforms

Amazon FBA Fee Toolkit

Go Deeper on Amazon Fees

Referral fees are just the start. These calculators cover the FBA charges that hide in your settlement reports.

Fee Comparisons

Compare Marketplace Fees

See how fees stack up side by side on the same product

Amazon Fees by Category

Amazon Referral Fee Rates

Browse referral fee rates for every Amazon product category

Selling Guides

How to Sell on Every Platform

Category-specific guides for selling on major ecommerce marketplaces

Tired of Manually Tracking Fees Across Marketplaces?

Futureproof automatically categorizes your transactions, tracks marketplace fees, and gives you a real-time P&L from your agentic finance team. $1,000/month for all six agents.