Free Seller Tools for eBay, Etsy & TikTok Shop Sellers

Selling on eBay, Etsy, or TikTok Shop? Know your real profit before you list. SellerGrowthTools gives you free seller tools for eBay, accurate calculators and easy-to-follow guides built specifically for online sellers in the US and UK — no sign-up, no spreadsheets, no guesswork

Why Sellers Trust Our Free Seller Tools For eBay

100% Free, Always

Every calculator and guide on this site is free to use — no hidden fees, no account required.

Built for Real Sellers

Our tools use up-to-date 2026 fee structures for eBay, Etsy, and TikTok Shop — no outdated numbers.

Simple, No Fluff

No confusing dashboards. Enter your numbers, get your answer, get back to selling.

Why We Started SellerGrowthTools

Starting an online business has never been easier — but choosing the right marketplace can still be confusing.

Every Marketplace Is Different

Many new sellers believe they need a huge investment to get started. In reality, every marketplace has its own cost, risk, and learning curve. eBay is one of the easiest platforms to start with — listing an item in the UK typically costs around £0.35, making it accessible for beginners who want to test products without investing heavily. Etsy is another beginner-friendly option, especially for digital products, handmade items, craft supplies, and personalized gifts. At just $0.20 per listing, creators can launch a product with very little upfront cost. Amazon, by comparison, offers huge opportunity but usually demands more planning, capital, and experience — sellers there often choose between models like Private Label, Wholesale, Online Arbitrage, and Retail Arbitrage, each with its own complexity. Managing inventory, sourcing, and Amazon’s policies can be far more challenging than starting on eBay or Etsy.

That’s Why We Created Seller Growth Tools

Our goal isn’t just to publish articles. We want to help sellers understand the differences between marketplaces, choose the right business model, calculate profits accurately, avoid common mistakes, and grow with confidence. Whether you’re posting your first eBay listing, launching a digital product on Etsy, or exploring TikTok Shop, Seller Growth Tools is here to give you practical guides, free calculators, and real-world knowledge that makes selling online simpler. Because every successful business starts with the right information.

Which Marketplace Is Right for You?

A quick side-by-side so you can decide where to start selling

Free Tools

Everything runs in your browser. No sign-up, no uploads, no email wall.

CALCULATOR eBay Fee Calculator Final value fee, per-order fee and your real net payout at any price. UK and US. CALCULATOR eBay ROI Calculator Work backwards from a sale price to the most you can pay for stock. IMAGE TOOL eBay Image Checker & Resizer Check size, format and HEIC before eBay rejects your photos.

Start Here

The guides sellers open most often.

SEASONAL eBay Q4 Selling Guide What sells best, when to list it, and the postage deadlines that matter. COSTS eBay Selling Fees (2026) Every fee explained for UK and US sellers, with worked examples. TROUBLESHOOTING Photos Not Uploading? Twelve fixes for failed uploads — size, HEIC, browser and app. RESEARCH How to Find Sold Items on eBay See what buyers actually paid before you set your own price. NEGOTIATING eBay Counter Offer The 48-hour window, how many rounds you get, and why accepting is binding. ACCOUNT HEALTH Negative Feedback Removal What eBay will remove, the 90-day window, and what to do when it won’t.

All free tools · All guides · About · Contact

100% Free	Every tool and guide — no paywalls, no trials.
Updated Regularly	Fee structures change; we keep our numbers current.
Beginner Friendly	No jargon — clear numbers and simple explanations.
Accurate Calculations	Built on real, current platform fee data.
No Login Required	Use any calculator instantly, no account needed.
Mobile Friendly	Works smoothly on your phone while you’re listing.

Ready to Grow Your Online Business?

Start with a free calculator, or browse our guides to sell smarter on eBay, Etsy, and TikTok Shop.

Free eBay fee Calculator

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