MarginCalculatorHub started with a frustration anyone who has sold a product online will recognize: it is far too easy to make a sale and still lose money.
Between platform fees, payment processing, packaging, ad spend, returns, and the quiet gap between markup and margin, the profit on a sale is almost never the number sellers think it is. Most calculators online tell only half the story, computing a headline margin and ignoring the costs that actually decide whether a product is worth selling. We built this site to close that gap. Every calculator here is designed to show the true net result of a sale, so the number on your screen is one you can act on.
What we make
MarginCalculatorHub is a free suite of profit and pricing calculators for modern ecommerce sellers and creators. The tools cover the platforms and situations where people most often miscalculate: TikTok Shop, Amazon FBA, Shopify, and dropshipping profit; break-even ROAS; product pricing; influencer and UGC economics; and the costs that quietly erode margins, like packaging and returns. Every calculation runs entirely in your browser, with no account and no signup.
Our approach
Three principles guide the work. First, show the real number, not the flattering one; we would rather show you an uncomfortable truth before you scale than a comfortable fiction you discover too late. Second, respect your data; the calculators process everything locally in your browser and we do not collect, store, or transmit the numbers you enter. Third, keep it free and open, supported by advertising so the tools stay available to every seller who needs them.
Who is behind it
MarginCalculatorHub is published by Aella Product Group, a small independent team that builds practical web tools for online sellers. We work in ecommerce ourselves, which is where the idea came from: these are the calculators we wanted and could not find, so we built them. We keep the team profile deliberately low-key and let the tools speak for themselves. If you have a question, a correction, or an idea for a calculator we should build next, we want to hear it. Reach us on our Contact page.
A note on accuracy
Our calculators are built to be as accurate as possible, but fees and platform rules change often and every business is different. The results are meant to inform your decisions, not replace professional accounting or financial advice. Always verify current platform fees and consult a qualified professional for decisions specific to your business.