All-in-One E-commerce Profit Calculator Suite

Make data-driven decisions with free, real-time profit and ROI calculators built for modern sellers.

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Choose Your Calculator

Select the tool that matches your selling channel and start calculating your real profits instantly.

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General Profit Calculator

Calculate net profit and ROI for any product with custom revenue, cost, fees, ads, and shipping inputs.

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Amazon FBA Calculator

Estimate FBA fulfillment fees, referral fees, storage costs, and ad spend to find your true Amazon profit margin.

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Shopify Profit Calculator

Account for Shopify plan transaction fees, Shopify Payments processing fees, and all selling costs in one place.

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Dropshipping Calculator

Calculate dropshipping profit, ROI, and break-even point factoring in supplier cost, platform fees, and ad spend.

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Why Sellermetrics?

Built for sellers who care about the numbers that actually matter.

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Real-Time Results

Calculations update instantly as you type — no submit button needed.

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Channel-Specific

Each calculator uses platform-accurate fee structures for Amazon, Shopify & more.

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Mobile Ready

Fully responsive design — calculate on any device, anywhere.

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100% Free

No sign-up, no credit card, no limits. Always free for sellers.

Frequently Asked Questions

An e-commerce profit calculator helps sellers determine their net profit by subtracting all costs (product cost, platform fees, shipping, and advertising) from revenue. It's essential for understanding whether a product is worth selling.
Profit margin is calculated as: (Net Profit ÷ Revenue) × 100. For example, if you earn $10 net profit on a $50 sale, your profit margin is 20%. A healthy e-commerce margin is typically 15–30%.
ROI (Return on Investment) measures how much profit you earn relative to what you invested. ROI = (Net Profit ÷ Total Cost) × 100. A positive ROI means your selling activity is profitable.
Use the Amazon FBA Calculator if you sell on Amazon with Fulfillment by Amazon. Use the Shopify Calculator for Shopify stores. Use the Dropshipping Calculator for supplier-fulfilled orders. Use the General Calculator for any other selling scenario.
Yes. Sellermetrics regularly updates fee structures to reflect the latest rates for Amazon FBA, Shopify plans, and payment processors. Always verify final fees with your platform's official fee schedule before making major inventory decisions.