Disclaimer

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Reeliy offers free online calculators and converters for maths, finance, health, statistics and everyday conversions. This page explains what you can and cannot rely on when you use them.

In short: the tools give estimates for general information. They are not professional advice, and anything important should be checked before you act on it.

General information only

A calculator on https://reeliy.com takes the numbers you type in, applies a published formula or an established method, and shows a result. It does not know your personal situation, your local rules or what you plan to do with the answer.

Treat every result as an estimate, not as a quote, a diagnosis, a recommendation or a final figure. Nothing on this site creates a professional relationship between you and Reeliy.

Health and medical use

Health calculators rely on general formulas built from averages across groups of people. They cannot account for your medical history, medication, pregnancy, age or any condition you may have.

Do not use a result to diagnose, treat or rule out an illness, to change a dose or medication, or to start or stop a diet or exercise programme. Speak to a doctor or another qualified health professional, and in an emergency contact your local emergency services.

Financial, investment and tax use

Finance calculators show what happens under the figures and assumptions you enter. Real products differ: fees, taxes, changing interest rates, a lender’s own rounding rules and your circumstances can all move the outcome.

Results are not investment, tax, accounting or credit advice, and they are not a forecast of future returns. Tax rules differ between countries and change over time. Before you commit money, ask a qualified adviser, an accountant or the provider concerned.

Legal matters

Nothing here is legal advice, and we do not say what the law requires in your situation. Laws and official calculation methods vary by country and region, and they change. If a figure will be used in a contract, a dispute or an official form, check it with a qualified lawyer or the responsible official body, and use their method and numbers.

Engineering, construction and safety

Do not rely on this site to size structural parts or loads, to design electrical, gas or pressure systems, or for any decision where a mistake could cause injury, death or damage. That kind of work needs a qualified professional, the codes and standards that apply where you are, safety margins and independent verification.

Rounding, assumptions and input errors

Several things can make a result differ from what you expected:

  • Rounding. Results are usually rounded for display, and rounding at different steps can change the last digit compared with another tool or your own working.
  • Assumptions and limits. Each calculator states its inputs, assumptions and limits on its page. A result only holds for situations that match them.
  • Input errors. A typing slip, a wrong unit or a value outside the intended range gives a wrong answer. Re-read what you entered before you read the result.

Check results before you rely on them

For anything important, do not take a single result on trust. At a minimum:

  • Re-enter the numbers and check the units and options you selected.
  • Do a rough sanity check by hand, or compare with a second independent method.
  • Compare with figures from the official source, provider or professional involved.
  • Keep your own record of any result you need. The site does not keep a copy of your inputs or results, so we cannot recover them for you.
  • Get qualified advice when the stakes are significant.

No warranty

Each calculator is built and tested as described in our Editorial Policy. That is a good-faith effort, not a guarantee.

The site and its content are provided “as is” and “as available”. As far as the law allows, we give no warranty of any kind, express or implied, including about accuracy, completeness, currency, uninterrupted or error-free operation, or fitness for a particular purpose. Tools and pages can be corrected, changed or removed at any time.

External links and advertising

Pages may link to other websites. We do not control those sites, and we do not endorse their content, products or claims. A link is not a recommendation. The site shows no advertising at the date of this page, and no advertiser or sponsor influences how our calculators work or the results they give. See our Advertising Disclosure.

Limits on our responsibility

You use the tools at your own risk and remain responsible for your decisions. As far as the applicable law allows, Reeliy is not responsible for any loss or damage, including financial loss or indirect damage, arising from your use of the site or from relying on a result. Nothing here excludes liability that cannot be excluded by law, and some places do not allow certain exclusions or give consumers rights that cannot be waived. If you live in one, part of this may not apply to you and your statutory rights are not affected.

Read this page together with our Terms of Use, which contain the full warranty and liability terms and the governing law.

Reporting an error

If you think a result, formula, label or explanation is wrong, email hello@reeliy.com with the page address, the values, units and options you entered, and the result you saw and the one you expected. The contact page lists what helps most.

Confirmed errors are fixed promptly and the page’s update date changes. We cannot give personal financial, medical, tax or legal advice by email, or say what a result means for your situation. The Editorial Policy explains how corrections work.

Changes to this page

We may update this disclaimer, for instance when the site or the law changes. The “Last updated” date on this page shows when it last changed in a meaningful way.