Free tools. No account needed.

Free tools for UK online sellers

Calculate profit, improve eBay listings, and check parcel details with practical tools for eBay sellers, dropshippers, and small online businesses.

Try Profit Calculator Build eBay Title

Seller toolkit

Useful checks before you list or post

Start with one of the free tools below. Your entries stay in your browser and there is nothing to install.

eBay UK Profit Calculator

Estimate selling profit, margin, fees, break-even price, and the impact of promoted listings using your own figures.

Calculate estimated profit

eBay Title Builder & Checker

Build title suggestions from verified product facts, then check length, repeated words, weak language, and useful details.

Build a listing title

UK Parcel Size Checker

Use packed dimensions and weight to get a general guide to likely letter, small parcel, medium parcel, or oversized categories.

Check a parcel

Simple by design

Why use SellSmart Tools UK?

Selling online already involves enough tabs and spreadsheets. These tools focus on the everyday checks that help you make clearer decisions.

Free to use
Works in your browser
Built for UK sellers
Beginner-friendly explanations
No account needed

Made for everyday selling

Who is this for?

SellSmart Tools UK is useful whether you list occasionally or run a growing online shop.

Marketplace sellers

For people selling through eBay, Facebook Marketplace, Vinted, or Amazon.

Dropshippers

For checking estimated margins and thinking through costs before choosing a product.

Small businesses

For independent sellers who need quick answers without complicated software.

Common questions

SellSmart Tools UK FAQ

Are these tools free?

Yes. The MVP tools are free to use and do not require a subscription or account.

Are the eBay fee calculations exact?

No. The calculator uses the selected UK business seller category plus published order and regulatory fees. Account discounts, surcharges, international sales, taxes, and marketplace changes can still affect the real charge.

Do I need to create an account?

No. There is no login, database, or account system. Tool inputs are processed in your browser.

Can I use this site on mobile?

Yes. The pages and forms are designed to work on phones, tablets, and desktop computers.