About ToolBaseWeb

ToolBaseWeb is a directory of small, single-purpose online tools. Open one, get your answer, close the tab. That's the whole idea.

What's here today

31 tools across 2 categories — 26 in Calculators, 5 in Generators. Calculators came first because they're the clearest test of the format — a form, a result, and an explanation of what the result means. Generators work the other way round: you set what you want and take the output away.

A category can exist here before it has any tools, and more are coming. Converters, lookups and comparison tools all need different interfaces, which is why the platform separates the directory from the tools themselves: each tool brings its own interface, and the browsing, search and A–Z layers stay the same.

How it works

• Everything runs in your browser. The maths happens on your device. Nothing you type is sent anywhere.
• No accounts. There's nothing to sign up for and nothing to log into.
• No saved history. Reload the page and it's gone. Copy anything you want to keep.

What these tools are not

They're estimates for general guidance. A mortgage calculator isn't a lender's offer, a BMI reading isn't a diagnosis, and a margin calculation isn't an accountant. Where a result depends on rules that vary by country — tax, employment law, medical thresholds — the tool says so rather than guessing.

Getting around

Press ⌘K anywhere to search. Or browse the full A–Z directory, which lists every tool across every category.