About ToolCubby
Fast, free, private tools for the everyday tasks people do on the web — built to run entirely in your browser.
What we do
ToolCubby is a collection of free online calculators, image converters, text tools and URL tools. Whether you need to work out a loan EMI, convert a WebP to PNG, remove duplicate lines from a list, or generate a URL slug, there is a tool here that does it instantly — no signup, no paywall, no data uploads.
Who it's for
ToolCubby is for anyone who needs a quick answer or a small job done without installing software or handing their data to a website. Students work out percentages, grades and attendance; professionals check an EMI or a loan figure before a meeting; freelancers and small teams convert and compress images for clients; and writers and developers tidy up text, sort lists and build clean URLs. Because every tool is free and runs in your browser, there is nothing to set up and nothing to learn before you get a result.
If a tool is missing from the site, tell us — the collection grows from suggestions just like yours.
Our mission
We believe the everyday utilities people reach for on the web should be instant, free and private. Too many online calculators and converters are hidden behind signup walls, upload limits, watermarks and paywalls — and they often send your data to a server you never think about. ToolCubby takes the opposite approach: simple, fast, browser-only tools that respect your privacy by default and never ask you to give up control over your own content just to get a free result.
ToolCubby launched publicly on Product Hunt — a free directory of 200+ browser-based tools built so that nothing you paste or upload ever leaves your device.
Why our tools are private
Every tool runs locally on your device using modern browser technology (JavaScript, the HTML5 canvas API and WebAssembly). That means the content you process never leaves your computer, is never stored on our servers, and is never seen by anyone else. It is the fastest and the most private way to get a result.
Our promise
- Completely free — no hidden charges, no premium tiers.
- Private — everything runs in your browser.
- Fast — results appear instantly, no waiting.
- Works everywhere — on desktop and mobile in any modern browser.
Get in touch
Have a suggestion, found a bug, or want a new tool? Visit our contact page.