» Terms of Service

By accessing or using Calkoo, you agree to these Terms. If you do not agree, do not use the website.

Calkoo is a free website. We do not provide account registration, paid subscriptions, or payment processing unless a specific page clearly says otherwise.

Calkoo provides free online calculators, converters, and informational content. Calculators may cover topics such as finance, loans, wages, taxes, dates and time, mathematics, science, engineering, construction, health, pregnancy, body weight, fitness, education, units, colors, sizes, and other everyday calculations.

The website is intended for general informational and convenience purposes only.

Calculator outputs are estimates based on the inputs, formulas, assumptions, rounding rules, and source data used by the relevant calculator. Results may be inaccurate, incomplete, outdated, or unsuitable for your specific circumstances.

You are responsible for checking all inputs and independently verifying any result before relying on it for an important decision. Do not rely on Calkoo as the only source for any decision that could affect health, safety, money, legal rights, tax obligations, employment rights, engineering work, construction, education outcomes, or similar important matters.

Calkoo does not provide medical, health, financial, investment, tax, accounting, legal, engineering, construction, safety, educational, or other professional advice.

You should consult a qualified professional before acting on calculator results in any important situation. For medical symptoms, treatment, pregnancy, nutrition, alcohol, medication, or emergency concerns, contact a qualified healthcare professional or emergency service instead of relying on this website.

Some calculators may involve higher-risk topics. The following additional cautions apply:

• Health, pregnancy, fitness, calorie, body-weight, and alcohol calculators: results are not diagnosis, treatment, medical screening, or a substitute for professional healthcare advice.
• Loan, mortgage, interest, wage, tax, investment, and financial calculators: results may omit fees, taxes, local rules, contract terms, exchange rates, market conditions, and personal circumstances. Verify with the relevant institution, adviser, employer, tax authority, or official source.
• Legal, deadline, entitlement, or compliance calculators: results are not legal advice and may not reflect all procedural rules, holidays, exceptions, jurisdictional differences, or recent legal changes.
• Engineering, electrical, chemical, construction, and safety-related calculators: results must not be used as the sole basis for safety-critical design, installation, production, medical use, or regulatory compliance.
• Education calculators: results are estimates and do not replace official school, examination, or institutional rules.

You agree to use Calkoo lawfully and responsibly. You must not misuse the website, interfere with its operation, attempt unauthorized access, introduce malicious code, overload the service, scrape or copy content at scale without permission, or use the website in a way that violates another person's rights or applicable law.

You are responsible for the information you enter into calculators or contact forms. Do not enter confidential, sensitive, regulated, or third-party personal information unless you understand and accept how that information may be processed as described in our Privacy Policy.

Our Privacy Policy explains how we process personal data, calculator inputs, server logs, cookies, analytics, advertising technologies, and contact-form messages.

The website, including text, calculator logic, design, layout, graphics, databases, and other content, is owned by or licensed to Calkoo and is protected by copyright and other intellectual-property laws.

You may use the website for personal, educational, and internal business purposes. You may link to Calkoo pages. You may not reproduce, republish, sell, frame, bulk extract, or commercially exploit substantial parts of the website without our prior written permission, except where permitted by mandatory law.

Calkoo may use third-party services for hosting, analytics, advertising, social media features, security, and other website operations. The website may also contain links to third-party websites. Third-party services and websites are controlled by their own providers and may be subject to separate terms and privacy policies.

Advertising helps keep Calkoo free. Ads, sponsored content, and third-party links are not professional advice or an endorsement by Calkoo. If we use affiliate links, we will seek to disclose that relationship clearly where the link appears or where otherwise required by law.

We may update, correct, suspend, withdraw, or discontinue any part of the website at any time. We do not promise that the website will always be available, secure, uninterrupted, error-free, or compatible with every device, browser, or software configuration.

We may update these Terms from time to time. The "Last updated" date shows when the current version was published. Material changes apply prospectively unless the law permits otherwise.

Calkoo is provided on an "as is" and "as available" basis. To the maximum extent permitted by law, we exclude implied warranties, guarantees, and conditions, including warranties of accuracy, fitness for a particular purpose, merchantability, non-infringement, availability, and error-free operation.

To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential, exemplary, or punitive damages, lost profits, lost revenue, lost data, loss of goodwill, or decisions made in reliance on calculator outputs or website content.

Nothing in these Terms excludes or limits liability that cannot legally be excluded or limited, including liability for intentional misconduct, fraud, gross negligence where applicable, death or personal injury caused by negligence, or your mandatory rights under applicable consumer law.

If you use Calkoo as a consumer, you may have mandatory rights under the laws of your country or state. These Terms do not take away rights that cannot be waived by contract.

These Terms are governed by the laws of the Republic of Estonia, without prejudice to mandatory consumer-protection rights that may apply in your country or state of residence.

We encourage you to contact us first so we can try to resolve any issue informally. If a dispute cannot be resolved, the courts of Estonia will have jurisdiction, except where mandatory law gives you the right to bring a claim in another court or prevents us from requiring an Estonian forum.

If any part of these Terms is found invalid or unenforceable, the remaining parts remain in effect. Our failure to enforce a provision does not waive our right to enforce it later.

Questions about these Terms can be sent through our contact form.