Free seller fee calculators for eBay, Poshmark, Mercari, Depop, Vinted, Whatnot, TikTok Shop and Faire. Enter a sale and see every fee on its own line, your payout and your profit, with US and UK versions where fees differ. Work backwards from the profit you want, or compare every platform for the same price. Built from each marketplace's official fee pages, no sign-up, and nothing you type leaves your browser.
