Sellerbench makes free calculators for people who sell online. Pricing, fees, returns, ad costs and taxes all affect what you keep, and the maths is easy to get wrong. Our tools do it for you, instantly, in your browser.
Sellerbench is a free project from Beem Solutions, a company that builds software and automation and runs growth marketing for businesses, including ecommerce brands. We built these calculators because we kept seeing the same pricing and advertising questions come up.
Each calculator shows its formulas and works through an example so you can check the result yourself. Where a tool uses published fee or tax rates, we say so and note the date. Rates change, so please confirm current figures with the platform or tax authority. Everything runs in your browser, and nothing you enter is sent to us.
Sellerbench is not affiliated with eBay, Amazon, Shopify, Etsy or any other platform mentioned on this site. Their names are used only to describe the fees they publish. See the disclaimer for details.
Found a mistake, or want a calculator added? Write to affan@beem.solutions.