Free Online Tools – Calculator, converter, generator & more

Summary: Free Online Tools offers 29 client-side web utilities including calculators, converters, generators, and text tools with no signup or tracking. It delivers offline functionality and a perfect 100/100 Lighthouse score, built using Vanilla JavaScript and hosted on Vercel.

What it does

It provides a variety of tools such as BMI and mortgage calculators, currency converter supporting 36 currencies, JSON formatter, password generator, and word counter, all running entirely in the browser without server-side tracking.

Who it's for

Users needing quick, privacy-focused online utilities without signup barriers or ads for everyday tasks and development needs.

Why it matters

It eliminates signup walls and tracking, enabling fast, private access to essential tools that work offline and maintain high performance.