Terms of Service

By using this site, you agree to these Terms of Service. If you do not agree, please do not use the site.

This site provides free, publicly accessible calculators covering health, finance, math, and everyday topics. It has no user accounts, no paid tiers, and no server-side processing — every calculation runs in your browser. See the About page for more on how the site is built.

Every result on this site is a mathematical estimate based on a general-purpose formula and the values you enter. None of it is medical, financial, legal, or other professional advice, and none of it accounts for your individual circumstances beyond the inputs you provide.

Health calculators (such as BMI, calorie needs, due date, or ovulation estimates) do not diagnose, treat, or predict any medical condition. Consult a doctor, dietitian, or midwife for guidance specific to your health.

Finance calculators (such as loan payments, compound interest, or retirement projections) are simplified models. Real loans, investments, and retirement outcomes are affected by fees, taxes, inflation, and market conditions that these calculators do not account for. Consult a licensed financial advisor before making a financial decision.

Use the results for general information and planning purposes only, and verify anything important against an authoritative source or professional before relying on it.

This site is provided "as is" and "as available," without warranties of any kind, express or implied, including but not limited to accuracy, reliability, or fitness for a particular purpose. We make a good-faith effort to keep the calculators correct, but we do not guarantee that any result, formula, or piece of content on this site is free of errors.

To the maximum extent permitted by law, the site operator is not liable for any loss or damage arising from your use of, or reliance on, this site or its calculators — including decisions made based on a calculated result. Use this site at your own risk.

This site may show advertisements served by Google AdSense. Ads and any linked third-party sites are not endorsed by this site, and we are not responsible for the content, accuracy, or practices of third-party sites you reach through an ad or a link. See the Privacy Policy for details on advertising cookies.

Some calculators provide an embed code so you can include a working copy on your own site, and a shareable link that encodes your inputs in the URL. You are welcome to use both features. Aside from that, the text, design, and code of this site may not be copied or republished without permission.

This site is not directed at children and is intended for general audiences. If you are a minor, please use this site only with the involvement of a parent or guardian.

These terms may be updated as the site changes. The date at the top of this page reflects the most recent update. Continued use of the site after a change means you accept the updated terms.

These terms are governed by the laws of the Republic of Korea, without regard to its conflict-of-law provisions. This does not deprive you of any consumer protection you are entitled to under the mandatory law of your country of residence.