What this site is
ToolKit Online is a hand-picked collection of the everyday calculators, converters and text utilities that people reach for the most. There are no accounts, no emails and no popups asking you to subscribe. Every tool is built to be useful, fast and accurate.
How it works
Each tool is a single HTML page that loads a small JavaScript file containing the maths. The page receives your input, runs the calculation in your browser and renders the result. Your numbers never leave your device.
Who it is for
- Students checking homework from a phone.
- Parents planning a household budget.
- Shoppers comparing prices in mixed units.
- Writers and editors working against tight limits.
- Developers needing a quick unit conversion or UUID.
Contact
For corrections, suggestions or new tool ideas, please open any tool and look for the related section, or write to the address listed in the privacy policy.