Metric vs Imperial: A Complete Conversion Guide

The world uses two major measurement systems: metric (used by ~95% of countries) and imperial/US customary (used primarily by the United States, with partial use in the UK and Canada). Converting between them is a daily necessity for international trade, travel, and communication.

Length: - 1 inch = 2.54 cm (exact definition) - 1 foot = 30.48 cm - 1 yard = 0.9144 m - 1 mile = 1.60934 km - 1 meter = 39.37 inches (≈ 3.28 feet) - 1 km = 0.621 miles

Weight/Mass: - 1 ounce = 28.35 g - 1 pound = 0.4536 kg - 1 stone = 6.35 kg (UK/Ireland body weight) - 1 kg = 2.2046 pounds

Volume: - 1 US fluid ounce = 29.57 mL - 1 US gallon = 3.785 L - 1 UK gallon = 4.546 L - 1 liter = 33.8 US fl oz

Temperature: Use formulas: °F = (°C × 9/5) + 32 and °C = (°F − 32) × 5/9

Use Tooler's unit converters (Length, Weight, Temperature, Speed) for instant, accurate conversions between metric and imperial units.