Clear, practical guides on the things our tools help with — word counts, data formats, everyday math, unit conversions and SEO. Every article is tied to a free tool you can use right away.
What counts as a word, how to hit a word-count target, and the fastest way to check any essay or article for free.
DevelopersBeautify, minify and validate JSON, plus the most common errors that make JSON invalid and how to spot them.
MoneyWhat compound interest is, the formula behind it, why starting early matters so much, and how to project your savings.
ConversionsThe exact formula, a quick mental shortcut, a handy reference table, and why the conversion is what it is.
Local SEOHow Google's UULE parameter lets you see search results from any location — and how to use it to find local ranking gaps.
Tool Goodie is first and foremost a collection of free online tools. This blog exists to answer the questions that come up around those tools — the "how do I…", "what is…" and "why does…" that a tool alone can't explain. Each article is written to be genuinely useful on its own, and links to the relevant tool so you can put it into practice in one click. New guides are added regularly.
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