Unit Converter

This unit converter supports multiple categories: Length (meters, feet, inches, miles, kilometers), Weight (kilograms, pounds, ounces, grams, tons), Temperature (Celsius, Fahrenheit, Kelvin), Volume (liters, gallons, cups, milliliters), Area (square meters, square feet, acres, hectares), and Speed (mph, km/h, m/s, knots).

Our conversions use precise conversion factors and maintain up to 10 decimal places of accuracy. For example, 1 inch = exactly 2.54 centimeters, 1 pound = exactly 453.59237 grams. The tool rounds results appropriately for display while maintaining full precision in calculations.

Metric units (International System of Units) are based on powers of 10 and include meters, kilograms, liters. Imperial/US customary units include feet, pounds, gallons. Most countries use metric, while the US primarily uses imperial. This converter seamlessly converts between both systems.

Temperature conversions use specific formulas: °F = (°C × 9/5) + 32, °C = (°F - 32) × 5/9, K = °C + 273.15. Key reference points: Water freezes at 0°C/32°F/273.15K and boils at 100°C/212°F/373.15K at sea level.

The most frequently used conversions include: Miles to kilometers (1 mile = 1.60934 km), Pounds to kilograms (1 lb = 0.453592 kg), Fahrenheit to Celsius, Gallons to liters (1 US gallon = 3.78541 L), Feet to meters (1 ft = 0.3048 m), and Inches to centimeters (1 in = 2.54 cm).

Select your input unit from the "From" dropdown, enter your value, then select your desired output unit from the "To" dropdown. The converter automatically handles system conversions, whether you're converting within the same system (meters to kilometers) or between systems (feet to meters).

There are regional variations: US gallon (3.785 liters) vs Imperial/UK gallon (4.546 liters), US ton (2000 pounds) vs UK ton (2240 pounds) vs Metric ton (1000 kg). Our converter clearly labels these variations and handles conversions between them accurately.

Yes! The converter handles compound units. For speed: mph, km/h, m/s, knots. For area: square meters, square feet, acres. For volume: cubic meters, cubic feet. Each category maintains proper dimensional analysis for accurate conversions.