About FreeOnline.fyi
Free browser-based tools, honest guides, no sign-up.
FreeOnline.fyi is a free online-tools website. We build small, focused utilities — calculators, converters, generators and checkers — and publish practical guides that show you how to get a specific task done. Everything runs in your browser: no account, no install, no paywall.
How we work
Our tools are specified, built and tested by our own team before they are published. The guides on this site are drafted with AI assistance and then reviewed by the team against the tool's actual behavior and the sources cited in each article. When we state a number, it either comes from the tool's own logic or from a cited source — we do not publish invented statistics.
Our promise
- Every tool on this site is free to use, with no registration.
- Calculations run locally in your browser wherever technically possible — your inputs are not the product.
- Guides state their limitations. Estimates are for reference only, and anything that affects money, health or legal matters should be verified with a professional.
See also our editorial guidelines.