About Knidox

Knidox is a growing collection of free calculators, converters, and references for students. Every tool is deterministic, runs in your browser, and shows the steps behind its answer.

Why we exist

AI assistants are confident and fast — but they guess, they hide their reasoning, and they get arithmetic wrong in ways that cost students marks. Knidox takes the opposite approach: the same input always gives the same correct result, and you can always see the math.

Our manifesto

Show your work. A tool that only spits out a number teaches nothing. Ours explain the method so you actually learn it.

Respect the student. No sign-up, no tracking, no dark patterns. Tools run offline once loaded, and nothing you type leaves your device.

Be correct, not clever. Deterministic logic over probabilistic guesses. Verified data over invented numbers.

Where the name comes from

Knidos was an ancient Anatolian city renowned for its school of medicine and philosophy — a place built around careful observation and reasoning. The name is a small homage to that spirit: tools that help you think clearly.