Calculators are for information only.

Every calculator on Calctube is built to help you work something out quickly. It is not a substitute for advice from a qualified professional who knows your situation.

Not professional advice

The results, estimates, and reference figures produced by Calctube calculators are general information and educational content. They do not constitute financial, investment, lending, accounting, tax, legal, medical, health, fitness, or other professional advice, and they should not be relied upon as such. Nothing on this site creates a professional-client relationship between you and Calctube.

Verify before you act

Calculator outputs depend entirely on the inputs you supply and on the assumptions built into the formula. A realistic answer still depends on things a calculator cannot see: your full financial position, the fees and charges your lender actually charges, the specific product terms you are signing for, your medical history, or the tax treatment that applies to you personally.

Before you commit money, sign a contract, change a mortgage, start an investment plan, or make a health decision, take the figure from the calculator and check it against the actual terms from your lender, provider, accountant, tax adviser, doctor, or other licensed professional. Where the two disagree, the provider's current written terms and a qualified professional's advice are the ones that count.

Rates, prices, and reference data

Interest rates, exchange rates, tax brackets, price indices, inflation assumptions, and other reference data used by Calctube are drawn from public sources and are provided as indicative ranges. They change frequently, may be delayed or incomplete, and may not reflect what you are offered. Calctube is not responsible for the accuracy, timeliness, or fitness of any reference figure for your particular use.

Health calculators in particular

The health calculators on this site — including body mass index, basal metabolic rate, total daily energy expenditure, calorie, and body fat estimates — are general screening tools based on population-level formulas. They are not diagnostic devices. They do not account for your medical history, medications, conditions, age-specific guidance, or the many factors that a clinician would consider. Do not use them to diagnose, treat, cure, or manage any condition, and do not change your diet, exercise, or medication on the basis of their output. Speak to a qualified healthcare professional about your individual circumstances, especially if you are pregnant, managing a chronic condition, injured, or making changes to prescribed treatment.

If you have a medical emergency, contact your local emergency number or a qualified healthcare provider immediately. Do not rely on this website or anything on it for urgent medical needs.

No warranty

Calctube and its calculators are provided on an "as is" and "as available" basis, without warranty of any kind, express or implied, including any implied warranties of merchantability, fitness for a particular purpose, accuracy, or non-infringement. To the maximum extent permitted by law, Calctube and its operators are not liable for any loss or damage, including lost profits, lost savings, lost data, or indirect or consequential loss, arising from your use of, or reliance on, anything on this site. You accept full responsibility for how you use the results.

Corrections and contact

We take accuracy seriously and fix errors as we find them. If a calculator produces a result you believe is wrong, tell us: email bugs@calctube.com with the page, the inputs you used, and the result you expected. If a figure on this site is misleading in a way that could affect a decision, please report it and we will review it.