Free Online Tools That Just Work

Free online tools that just work

Tool Goodie is a growing collection of free, fast, and private online tools — the small utilities you reach for a dozen times a week but shouldn't have to install software, create an account, or wade through pop-ups to use. Count the words in an essay, convert kilograms to pounds, format a messy block of JSON, work out a loan payment, generate a secure password — then get on with your day.

Most "free tool" sites bury the actual tool under sign-up walls, trackers, and a wall of ads. Tool Goodie takes the opposite approach: every utility here loads instantly, does one job well, and comes with a plain-language explanation of how it works and when to use it. There's nothing to download and nothing to sign up for.

Everything in one place

Our tools are organised into clear categories so you can find what you need fast:

• Text Tools — count words and characters, convert letter case, remove duplicate lines, sort and reverse text, generate lorem ipsum, and turn titles into clean URL slugs.
• Developer Tools — format and validate JSON, encode and decode Base64 and URLs, generate UUIDs and secure passwords, hash text with SHA-256, decode JWTs, convert colours and number bases, and more.
• Calculators — percentages, loans and mortgages, compound interest, BMI, tips, discounts, ages, and the number of days between two dates.
• SEO Tools — generate Google UULE codes to check local rankings, preview search snippets and build meta tags, check keyword density, and create a robots.txt file.
• Converters — convert length, weight, temperature, area, data storage and speed between metric and imperial units, using internationally defined factors.

Every one of these runs the moment the page loads, updates as you type, and lets you copy the result with a single click.

Private by design

This is the part that sets Tool Goodie apart. Every tool runs entirely in your browser using client-side JavaScript. When you paste text, type a number, or drop in a token, that data is processed on your own device and is never uploaded to a server, logged, or stored. Close the tab and it's gone.

That matters more than it sounds. Many online formatters, encoders, and converters quietly send whatever you paste to a remote server to do the work — which is a real problem when you're handling API keys, personal data, draft content, or anything confidential. With Tool Goodie there's simply nothing to leak, because your input never leaves your computer in the first place.

Built to be fast and accurate

Speed and correctness are the whole point of a utility, so we don't compromise on either. The pages are lightweight static HTML with no heavy frameworks and no tracking scripts weighing them down, which means they load and respond instantly, even on a phone or a slow connection.

Accuracy gets the same care. Every calculator and converter is checked against known reference values — a mile is exactly 1.609344 kilometres, a kilogram is 2.20462 pounds, water freezes at 0°C / 32°F — and the formulas and unit factors we use are the internationally defined ones, not rough approximations. You can trust the numbers.

Frequently asked questions