The fine print,
kept readable

Using the site

DIY9lives is free for personal use. Please don't misuse the site, try to break it, or copy it wholesale. Linking to us and sharing the tools is always welcome.

Estimates only — not professional advice

Every tool here gives an estimate based on simplified formulas and the numbers you enter. Nothing on this site is financial, tax, legal, medical, veterinary, engineering, or construction advice.

• Money and taxes: mortgage, loan, retirement, salary, and 1099 tax results are approximations. Talk to a qualified accountant or financial professional before making decisions.
• Health and fitness: BMI, calorie, macro, heart rate, one-rep max, pregnancy, period, and sleep tools are general information and are not diagnostic. Consult a doctor for personal health decisions.
• Pets: the pet age calculator is a general guide. Ask your veterinarian about your pet.
• Cars and home projects: tire sizes, concrete, flooring, AC sizing, and similar results are planning aids. Confirm fitment, load, safety, and local building codes with a professional or the manufacturer before you buy or install anything.

Accuracy

We work to keep the tools correct, but we can't guarantee it. Tax rates, brackets, exchange rates, and prices change, and some figures are approximate or reflect a specific date. Check anything important against an official source.

No warranty and limitation of liability

The site and tools are provided “as is” without warranties of any kind. To the fullest extent allowed by law, DIY9lives is not liable for any loss or damage arising from your use of, or reliance on, the site or its results.

Ads and third-party links

The site displays advertising from Google AdSense and may link to third-party sites. We don't control or endorse advertised products or outside websites. If we ever use affiliate links, we may earn a commission at no extra cost to you, and we'll make that clear.

Ownership

The site design, code, and original content belong to DIY9lives. Third-party names and data sources mentioned remain the property of their owners.

Changes

Tools and these terms may change over time. Continued use of the site means you accept the current version.

Contact

Questions: diy9lives@gmail.com.