Free ecommerce tools

These free ecommerce tools run entirely in your browser. No email address, no signup, no account, and nothing stored anywhere. They come out of the same work I do inside client stores, packaged so you can run the numbers yourself before deciding whether you need anybody’s help at all.

What these free ecommerce tools are for

Most store owners already sense that something in the funnel is wrong. What they lack is a way to put a number on it, and a way to decide which of five plausible problems deserves the next month of work. That is the gap these tools fill.

The ecommerce conversion rate calculator takes your sessions, your four funnel rates and your average order value, and returns orders, revenue and conversion rate, plus how many visitors you lose at every step and what recovering one percent of them would be worth over a year. The result that surprises people is which step wins. It is almost never the one losing the most visitors, because a visitor rescued early still has to survive every step after that.

Why they ask for no email

Gating a calculator behind a form is a good way to collect leads and a bad way to be useful. Half the people who would benefit walk away, and the half who stay are annoyed before they see a single number. Everything here runs in JavaScript on your own machine. Nothing you type is sent to a server, logged, or seen by me.

That also means you can put your real figures in rather than rounded ones, which is the only way any of this produces a useful answer.

Check your data before you trust the output

Every calculator inherits the quality of what you feed it. Before you take any output seriously, do one check: open last month’s order count in your platform admin, then open the same month in your analytics. A gap of a few percent is normal and not worth chasing. A gap of fifteen percent means your tracking is broken, and every number you are about to calculate is fiction.

If that check fails, fix it first. The ecommerce analytics audit walks through the usual causes, most of which are duplicate tags, a missing purchase event or consent banners quietly blocking a third of your sessions.

What a tool cannot tell you

A calculator does arithmetic. It can tell you that your product page step is worth nine times more than your landing step, which is genuinely useful and takes thirty seconds. It cannot tell you why people leave that page, whether the drop is fixable, or what a fix would cost to build.

A twelve percent add-to-cart rate might be a broken page or might be excellent for the category. No tool can separate those two cases, because the answer lives in your products, your prices, your photography and your competition. If you want the why rather than the where, traffic without sales maps symptoms to funnel stages, and ecommerce CRO covers the research methods that find causes rather than correlations.

What is coming next

Two more are in progress: a cart abandonment cost calculator that turns your abandonment rate into an annual figure and splits it by the reasons that are actually addressable, and a customer lifetime value model that shows what you can afford to pay to acquire a customer once repeat purchases are counted.

If there is a calculation you keep rebuilding in a spreadsheet, tell me. It is usually a couple of hours of work and somebody else almost certainly needs it too. All of these free ecommerce tools stay free and stay embeddable.