Unit Converter

The world runs on two measurement systems, and converting between them is a daily need for millions. The metric system (used by 95% of the world population) is decimal-based: 1 kilometer = 1,000 meters, 1 kilogram = 1,000 grams. The imperial system (primarily US, Liberia, Myanmar) uses less intuitive ratios: 1 mile = 5,280 feet, 1 pound = 16 ounces. Common conversions that trip people up: 1 mile is 1.609 kilometers (not 1.5), 1 inch is 2.54 centimeters (not 2.5), and 1 gallon (US) is 3.785 liters. Temperature conversion is the most confusing: Fahrenheit to Celsius requires subtracting 32, then multiplying by 5/9. So 72°F (room temperature) is 22.2°C. Water freezes at 32°F/0°C and boils at 212°F/100°C. This converter handles over 200 units across 12 categories — length, weight, volume, temperature, area, speed, pressure, energy, power, data, time, and cooking measurements. Every conversion happens instantly in your browser using precise conversion factors.

Cooking measurement conversions are especially tricky because the same words mean different volumes in different countries. A US cup is 236.6ml while an Australian cup is 250ml — a difference that can ruin baking recipes where precision matters. One US tablespoon is 14.8ml versus 15ml in most other countries and 20ml in Australia. Converting between weight and volume depends on the ingredient: 1 cup of flour weighs about 125g, but 1 cup of sugar weighs 200g and 1 cup of butter weighs 227g. Professional bakers strongly prefer weight measurements for this reason. Liquid conversions are more consistent: 1 US fluid ounce equals 29.57ml. For international recipes, converting between grams and ounces (1 oz = 28.35g) is the most common need. Digital kitchen scales have made weight-based cooking more accessible, but when following older recipes calling for cups and tablespoons, this converter ensures you get the ratios right. Useful for any recipe source, all running locally in your browser.