About PocketNum

PocketNum is a small set of free unit conversion tools built for everyday questions: How tall is 180 cm in feet? How many grams is a cup of flour? What shoe size do I need in Europe? Each converter answers instantly, in both directions, and shows its working.

How Our Converters Work

Every calculation runs entirely in your browser using standard, published conversion factors — for example, 1 inch = exactly 2.54 cm and 1 pound = exactly 0.45359237 kg. Nothing you type is sent to a server, stored, or shared. Each tool page shows the formula it uses and a reference table of common values, so you can verify any result yourself.

What You Can Convert

• Height — centimeters, meters, feet and inches
• Weight — kilograms, pounds, ounces and stones
• Temperature — Celsius, Fahrenheit and Kelvin
• Length & distance — kilometers, miles, meters, feet, yards, inches, centimeters, millimeters
• Cooking — cups to grams by ingredient, tablespoons and teaspoons to milliliters
• Shoe sizes — US, UK and EU for men, women and kids

Accuracy Note

Results are rounded for readability (usually to two decimal places) and are meant for everyday use — travel, shopping, cooking, forms and homework. For engineering, medical or legal work, use certified instruments and unrounded values. Shoe sizes in particular are guides: brands vary, and the manufacturer's own chart always wins.

Get in Touch

Spotted an error or want a converter we don't have yet? Email us at contact@pocketnum.com or use the contact page.