About ToolboxKit
ToolboxKit is a growing collection of 400+ free online tools built for developers, writers, designers, and anyone who needs quick utilities without the hassle.
100% Free
Every tool is free to use. There are no premium tiers, usage limits, or hidden costs.
Runs in Your Browser
All tools run directly in your browser. Your data stays on your device - calculations, conversions, and results are never sent to a server.
Fast and Lightweight
Tools load instantly on any device. Each tool only loads the code it needs, so even on a slow connection you're up and running in seconds.
Remembers Your Preferences
Your favourites, recently used tools, and currency preference are saved locally in your browser. Pick GBP on one tool and every other tool remembers it. Clear your browser data to reset anytime.
Why We Built This
We got tired of searching for simple tools online and landing on pages full of ads, pop-ups, and sign-up walls. So we built ToolboxKit - a clean, fast, and reliable set of utilities that just work.
From mortgage calculators and tax estimators to JSON formatters and image tools, the goal is the same: open the page, use the tool, get your answer. Every formula is verified, every tool is accessible, and everything runs locally in your browser.