FAQ
Is CalcHub free?
Yes. It is free and supported by advertising.
Are the results accurate?
Formulas are standard and tested, but results are estimates for information only, not professional advice.
Do you store what I type?
No. Calculations run in your browser. Your saved list and settings stay on your device.
Which cookies do you use?
Essential storage always; analytics and advertising only if you allow them. See the Cookie Policy and use Cookie Settings in the footer to change your choice.
How do I opt out of personalised ads?
Choose Reject non-essential, or turn Advertising off in Cookie Settings. You can also use Google Ad Settings. We honour the Global Privacy Control signal.
Can I request a new calculator?
Yes – search for it, or contact us.
Why is a calculator result different from my bank or doctor?
Banks, tax offices and clinicians use their own rules and rounding. Always follow their official figures.
Is the site accessible?
We work to meet WCAG 2.1 AA. See Accessibility.