Free online tools for work, study & home
Browser-based converters, calculators, generators, developer, cooking, engineering, health and finance tools — all free, all private, running entirely in your browser.
Platform statistics
Popular tools
What people open most. Everything runs client-side, instantly.
Browse by category
Six focused collections spanning conversions, code, writing, home, engineering and finance.
Featured collections
Curated toolkits for the jobs people do most.
Built to get out of your way
No upsells, no walls, and no reason to wonder where your data went.
Three steps, no setup
No account, no upload, no waiting. Open a tool and you are working.
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Choose a tool
Search by name or browse by category to find the converter, calculator or generator you need.
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Enter your values
Type your inputs and see results update instantly. Everything is calculated on your own device.
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Copy or download
Copy the result, download the output, or print it. Nothing is stored and nothing is sent.
Built for the way you work
The same tools serve very different people. A few of the ways they get used:
Recently added
The newest arrivals, ordered automatically by release date.
Frequently asked questions
Yes, every tool is free with no usage limits and no paid tier. The site is supported by advertising rather than subscriptions.
No. There is nothing to sign up for and no email to hand over. Your theme choice is remembered in your browser and never sent anywhere.
No. Every calculation runs in your browser with JavaScript. There is no server to send anything to, which is also why the tools keep working if your connection drops after the page loads.
Yes. The layout is built for small screens first, with tap targets sized for thumbs, and it scales up from there to tablets and desktops.
Each tool states its formula and rounding on the page so you can check the working. Use them for estimates and planning, not as a substitute for professional financial or medical advice.