Terms of use
Last updated: October 15, 2026.
Using the tools
The calculators on Web Utility Services are free to use for personal and commercial projects. You don’t need an account.
Accuracy
We work to make every tool correct: formulas are checked against published sources and tested. Even so, results are estimates based on the inputs you provide and the assumptions explained on each page. They can be wrong, for example because of measurement error, unusual materials or products, or a mistake on our part.
- Check important results against the manufacturer’s instructions, product data sheets or a qualified professional.
- Don’t rely on these tools for safety-critical, legal, medical or financial decisions.
- Alcohol calculations are estimates for hobby use and are not suitable for product labeling.
No warranty
The site and tools are provided “as is”, without warranties of any kind. To the extent permitted by law, we are not liable for losses arising from use of the site or reliance on its results.
Content
The text and code on this site are ours unless stated otherwise. Formulas and data are credited to their sources on each tool page. Brand names mentioned are the property of their owners and are used only to describe compatibility; we are not affiliated with them.