Our Mission
UnitAuthority was created to provide free, transparent, and accurate unit conversion for everyone. Whether you are a student, engineer, traveler, chef, or fitness enthusiast, our tools deliver instant, scientifically accurate results using internationally standardized conversion factors.
What We Offer
- 7 Conversion Hubs — KG/Pounds, Pressure Units, Metric/Imperial Charts, Liters/LBS, Linear Feet, Pixels/Inches, and General Metric/Imperial
- 390+ Dedicated Pages — pre-calculated conversions with context, formulas, reference tables, and practical examples
- Free Forever — no sign-up, no fees, no data collection. All calculations happen in your browser.
- Mobile-First Design — responsive layout that works on any device
Our Methodology
Accuracy is our top priority. All conversion factors used on this site are sourced from officially recognized international standards:
- NIST (National Institute of Standards and Technology) — the US federal agency that maintains measurement standards
- BIPM (International Bureau of Weights and Measures) — the intergovernmental organization that maintains the International System of Units (SI)
- ISO 80000 — the international standard for quantities and units
Our conversion factors are accurate to at least 6 significant figures. For example, our kg-to-pounds factor (2.20462) matches the exact value defined by the international yard and pound agreement of 1959: 1 lb = 0.45359237 kg exactly.
Built by Mohamed Skhiri
UnitAuthority is designed and built by Mohamed Skhiri, a software developer with expertise in web application development and a passion for creating useful, accessible tools. Mohamed has built multiple high-quality conversion and calculator websites, each focused on accuracy, performance, and user experience.
Every page on this site has been carefully structured with proper semantic HTML, comprehensive schema markup (BreadcrumbList, FAQPage, SoftwareApplication, WebPage), and SEO best practices to ensure the information reaches those who need it most.
Technical Details
This site is built with modern web technologies for maximum performance:
- Static HTML Generation — all 390+ pages are pre-built for instant loading
- Client-Side Calculation — no server requests needed, complete privacy
- Structured Data — rich schema markup on every page for search engine clarity
- Responsive Design — optimized for mobile, tablet, and desktop
- Accessibility — semantic HTML, ARIA labels, and keyboard navigation support
Editorial Policy
We are committed to providing accurate, unbiased conversion information. Our content is:
- Fact-checked against official NIST and BIPM standards
- Regularly reviewed and updated (current version: March 2026)
- Transparent — every conversion shows the exact formula and factor used
- Independent — no sponsored conversions or advertiser influence on results
Contact
Questions or feedback? Email us at contact@unitauthority.com.