Reference tools

Calculators and reference tables that sit alongside the UnitFlip converters. Like everything here, they run entirely in your browser.

Everyday converters

These depend on an ingredient density, a sizing chart, or a national standard rather than a single fixed factor, so each tool shows the basis it used.

Everyday Cooking Converter Cups, tablespoons, grams, and ounces with real ingredient densities for flour, sugar, butter, and more. Everyday Height Converter Feet + inches to centimeters and back, with tape-measure fractions down to 1/64 inch. Everyday Shoe Size Converter US, UK, EU, Japanese, Korean, and Mondopoint sizes matched through measured foot length. Adult and kids charts. Everyday Clothing Size Converter International charts for women's, men's, and children's clothing plus hats, with body measurements. Everyday Paper Size Converter A4, Letter, and every ISO, US, and photo size in mm, inches, and pixels at your chosen DPI.

Reference tables

For when the numbers aren't units.

Reference tool Number Base Converter Convert integers between binary, octal, decimal, hexadecimal, and any base from 2 to 36. Reference tool SI Prefixes Every metric prefix from quetta to quecto, plus the IEC binary prefixes kibi through yobi.