MyProfitMargin – Free ecommerce profit margin and break-even calculator

Summary: MyProfitMargin is a free tool for Shopify sellers, Amazon merchants, and dropshipping businesses to calculate profit margins, break-even prices, and total product costs. It includes simulators for monthly profit and advertising cost impact, helping users assess product profitability before launch or scaling.

What it does

It calculates profit margin, break-even price, total product cost, monthly profit projections, and the effect of advertising costs (CPA) on margins.

Who it's for

Designed for ecommerce sellers on Shopify, Amazon, and dropshipping businesses.

Why it matters

It helps sellers identify true profitability by accounting for all costs beyond price and product cost, preventing losses.