maratoolSizing converter tools
Real-world sizing: tires, screens, clothing, and hats.
Tire Size Calculator — Compare Tire Dimensions
Enter a tire size like 205/55R16 to get diameter, sidewall, and circumference — and compare two sizes with speedometer error. Free, in-browser.
Screen Size Calculator — TV & Monitor Dimensions
Turn a diagonal size and aspect ratio into real width, height, area, and PPI for TVs and monitors — inches and centimeters. Free, in-browser.
Clothing Size Converter — US, EU & UK Dress and Suit Sizes
Convert clothing sizes between US, UK, EU, Italian, and Japanese charts for women’s dresses, men’s suits, and shirts. Free, in your browser.
Hat Size Converter — US, UK & CM
Convert hat sizes between head circumference in cm or inches, US and UK numeric sizes, and S/M/L letters. Free hat size converter in your browser.