About Sellculate
Sellculate makes free, accurate fee and profit calculators for online sellers — so you can see exactly what you keep after marketplace fees before you ever list an item.
Why we built it
Marketplace fees are confusing on purpose. Every platform stacks a commission, a payment-processing fee, and sometimes listing or per-order fees — and several charge their percentage on your shipping, too. The result: sellers routinely price by guesswork and discover their real margin only after the money lands. Sellculate exists to replace that guesswork with a number you can trust, in seconds, for free.
What we offer
- 15 marketplace calculators — TikTok Shop, Etsy, Amazon, eBay, Shopify, Walmart, Poshmark, Mercari, Grailed, Reverb, StockX, Whatnot, Bonanza, Facebook Marketplace and print-on-demand — each showing net profit, margin, ROI and break-even.
- Plain-English guides — comparisons and how-tos on fees, pricing and shipping, written to actually help you keep more of every sale. See all of them under Guides.
How we keep the fees accurate
Fee accuracy is the whole point, so we take it seriously:
- We source rates from each marketplace's official fee pages, corroborated against multiple independent references.
- Every fee in every calculator is dated and fully editable — so the tool stays correct for your exact account, category or seller level, and remains useful even when a platform changes its rates.
- When fees change, we update the calculators and note it. Still, rates vary by account and shift over time, so our numbers are planning estimates, not financial advice — always confirm against your own seller dashboard.
How the site stays free
Sellculate is free to use and always will be. We keep the lights on through occasional affiliate links — when we recommend a tool we genuinely think helps sellers (like print-on-demand providers or seller-research software), we may earn a commission at no extra cost to you. We only recommend tools relevant to the page you're on, and every affiliate link is clearly disclosed.
Get in touch
The best way to stay in the loop on fee changes and new calculators is the newsletter below. We don't sell or share your email, and there's no spam.