Unit Conversion Calculator
CALCUnit Conversion Guide
Convert between metric and imperial units instantly. Length: meters, kilometers, feet, miles, inches. Weight: kilograms, grams, pounds, ounces. Volume: liters, gallons, cups, milliliters. Temperature: Celsius, Fahrenheit, Kelvin. All conversions use standard international conversion factors (1 mile = 1.609 km, 1 inch = 2.54 cm, 1 kg = 2.2046 lb, 1 US gallon = 3.785 L). Results update automatically as you type.
Frequently Asked Questions
Q: How many centimeters are in an inch?
A: Exactly 2.54 centimeters. This is a defined value, so 1 foot equals 30.48 cm.
Q: How do I convert miles to kilometers?
A: Multiply the number of miles by 1.609. For example, 5 miles equals about 8.05 km. To reverse it, divide kilometers by 1.609.
Q: How many pounds are in a kilogram?
A: One kilogram equals about 2.2046 pounds, and one pound equals 453.592 grams.