Converters
Multi-unit international conversion utilities adhering to BIPM metric definitions and NIST conversion constants.
Length Converter
1 inch = 2.54 cm (exact) 1 foot = 12 inches = 0.3048 m 1 yard = 3 feet = 0.9144 m 1 mile = 1,760 yards = 1.609344 km 1 nautical mile = 1,852 m
Convert between metric and imperial lengths — cm, m, km, inches, feet, yards and miles — with exact conversion factors.
Temperature Converter
°F = °C × 9/5 + 32 °C = (°F − 32) × 5/9 K = °C + 273.15
Convert between Celsius, Fahrenheit and Kelvin instantly, with the formulas and common reference temperatures.
Weight Converter
1 pound (lb) = 0.45359237 kg (exact) 1 ounce = 1/16 lb = 28.349523125 g 1 stone = 14 lb = 6.35029318 kg 1 US ton = 2,000 lb · 1 UK ton = 2,240 lb
Convert between kilograms, grams, pounds, ounces, stone and tons using the exact international definitions.