Question 1

Is ConvertProf really free to use?

Accepted Answer

Yes, ConvertProf is 100% free. There are no sign-ups, no paywalls, and no hidden fees. You can use every unit converter and the scientific calculator as much as you want, without limits.

Question 2

How accurate are the unit conversions on ConvertProf?

Accepted Answer

All conversions are based on official SI definitions and internationally accepted conversion factors. Calculations run in your browser using JavaScript double-precision arithmetic, giving roughly 15 significant digits of accuracy — more than enough for cooking, engineering, and science.

Question 3

What units and categories can I convert on ConvertProf?

Accepted Answer

ConvertProf supports length, weight, temperature, area, volume, speed, time, and digital data unit categories.

Question 4

Does ConvertProf work offline or on mobile devices?

Accepted Answer

ConvertProf is a fully responsive web app that works on phones, tablets, and desktops. Conversions and calculations run instantly in your browser without sending data to any server.

Question 5

Do you store any of my data or conversion history?

Accepted Answer

No. ConvertProf does not require an account and does not store your inputs on our servers. All calculations happen locally in your browser.

Question 6

Can I use the scientific calculator for advanced math?

Accepted Answer

Yes. The built-in scientific calculator supports trigonometric functions, logarithms, exponents, square roots, parentheses, and percentage calculations.

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