About
Built for sellers who care about real numbers.
The Ecom Toolbox is a free suite of precision calculators built for ecommerce operators, dropshippers, and media buyers who want accurate unit economics — without paying for software, signing up for trials, or sitting through demos.
Why we built this
Most ecommerce sellers do not have a clear picture of their unit economics until it is too late. They price products based on gut feel, run ads without knowing their break-even ROAS, and discover thin or negative margins only when the bank account stops growing.
The existing tools that solve this are either locked behind SaaS subscriptions, buried inside platforms that push their own products, or so oversimplified they miss the fee layers that matter most — gateway fees, platform transaction fees, return rates, and CAC.
The Ecom Toolbox exists to change that. Every calculator is free, fully client-side, and built to expose the real number behind a sale — not an optimistic estimate.
Our principles
No accounts. Ever.
Every tool runs entirely in your browser. Nothing is transmitted to a server. You do not need to create an account, verify an email, or hand over personal information to use any calculator.
No paywalls.
All tools are permanently free. There is no freemium tier, no feature lock, and no trial period. The full functionality of every calculator is available from the first visit.
No dark patterns.
No pop-ups asking you to subscribe before you see results. No cookie banners designed to trick you into opting in. No artificial limits designed to upsell a paid plan.
Shareable by design.
Every calculator state is encoded into the URL. Share a specific product scenario with a business partner or save it as a bookmark — the full calculation travels with the link.
The full toolkit
Dropshipping Profit Calculator
True net margin with platform presets, CAC, and break-even ROAS.
MER Calculator
Blended Marketing Efficiency Ratio across all paid channels.
Google Ads ROAS Calculator
PPC ROI, break-even CPC, and daily projection modeling.
Meta Ad Text Checker
Character limit validator for every Meta placement.
Squarespace Calculator
Profit calculator with Squarespace plan fees applied automatically.
Wix Store Calculator
Profit calculator with Wix Payments fees applied automatically.
Have a question or suggestion?
We are always looking to add calculators that solve real problems for ecommerce sellers. If there is a tool you need or feedback to share, reach out.
Contact us