Quick online tools for developers, designers, and everyday tasks. Free to use, no sign-up, and nothing you do leaves your browser.
Three steps, no sign-up, no install.
Search by name or browse 49 categories. Whatever you came for is a click or two away.
Tools run right in the page. No account to set up, no waiting on a server.
Your work stays on your device the whole time. When you're done, nothing's saved and nothing follows you.
The eight busiest categories, with hundreds of tools inside.
Format, minify, and debug code and APIs.
Structural, mechanical, and construction calculators.
Convert length, weight, temperature, and other units.
BMI, calorie, and fitness calculators.
Manipulate, analyze, and transform text instantly.
Physics, chemistry, and scientific calculators.
Currency conversions, budgeting, and financial math.
Convert, pick, and explore color formats with ease.
The tools people open again and again.
No corporate accounts, no data harvesting, no upsells.
Top10k Tools is a free collection of 2,491+ online utilities that run entirely in your browser.
Converters, calculators, generators, and developer tools — no account, no installs, no uploads. Everything runs on your device, so your data never leaves it. Pick a tool, get your result, and close the tab. New tools are added regularly.
Top10k Tools is a free collection of 2,491+ online utilities — converters, calculators, generators, and developer tools — that run entirely in your browser. No account, no installs, and no uploads.
Yes. Every tool on Top10k Tools is 100% free, with no account, payment, or freemium tier.
No. There is no sign-up and no email to confirm — open any tool and start using it.
Yes. Tools run client-side in your browser, so your files and inputs stay on your device and are never uploaded to a server.
Top10k Tools has 2,491+ tools across 49 categories, and new tools are added regularly.
Yes. If a tool you need is not here yet, request it on the Request a Tool page — most requests go live within a day, and every tool stays free.