Affiliate disclosure

FindTheNorm uses affiliate links on some calculator pages. When you click an affiliate link and complete a purchase, sign-up, or other qualifying action on the partner site, FindTheNorm may earn a small commission at no additional cost to you. These commissions help fund the research, data sourcing, and maintenance behind our 335+ calculators. Affiliate relationships never influence which calculators we build, what data we use, or what results we show. Our percentile methodology relies on peer-reviewed research and official statistics from sources including the Office for National Statistics, Centers for Disease Control and Prevention, US Census Bureau, and Federal Reserve, all listed on each calculator's methodology page. If you have questions about a specific affiliate relationship, contact [email protected].