Free Online Unit Converter
Convert between different units of measurement instantly with our free online unit converter. Perfect for students, engineers, cooks, and anyone who needs quick and accurate unit conversions.
Supported Unit Categories
Length Conversions
Convert between meters, kilometers, centimeters, millimeters, miles, yards, feet, and inches. Useful for construction, travel planning, and international measurements.
Weight Conversions
Convert between kilograms, grams, milligrams, pounds, ounces, and tons. Essential for cooking, shipping, science experiments, and fitness tracking.
Temperature Conversions
Convert between Celsius, Fahrenheit, and Kelvin. Critical for cooking, weather forecasting, scientific calculations, and international travel.
Volume Conversions
Convert between liters, milliliters, gallons, quarts, pints, cups, and fluid ounces. Perfect for cooking, baking, and liquid measurements.
Speed Conversions
Convert between meters per second, kilometers per hour, miles per hour, knots, and feet per second. Ideal for travel, physics, and sports calculations.
Common Conversion Examples
- 1 inch = 2.54 centimeters
- 1 pound = 0.453592 kilograms
- 0°C = 32°F (freezing point of water)
- 1 gallon = 3.78541 liters
- 60 mph = 96.56 km/h
Why Use a Unit Converter?
Different countries and industries use different measurement systems. The metric system is used worldwide, while the imperial system is common in the United States. Converting between these systems accurately is essential for:
- International business and trade
- Following recipes from different countries
- Scientific research and calculations
- Construction and engineering projects
- Travel and transportation planning