Unit Converter Express Version Find the Units to Convert Common Conversions Celsius to Fahrenheit grams to ounces liters to gallons pounds to ounces acres to square feet radians to degrees meters to yards Fahrenheit to Celsius ounces to grams gallons to liters ounces to pounds square feet to acres degrees to radians yards to meters Unit Converters — Full Versions Common Converters Length Converter Weight and Mass Converter Volume Converter Temperature Converter Pressure Converter Energy Converter Volume - Dry Converter Currency Converter Power Converter Force Converter Speed Converter Angle Converter Fuel Consumption Converter Numbers Converter Data Storage Converter Engineering Converters Velocity - Angular Converter Acceleration Converter Acceleration - Angular Converter Density Converter Specific Volume Converter Moment of Inertia Converter Moment of Force Converter Torque Converter Heat Converters Fuel Efficiency - Mass Converter Fuel Efficiency - Volume Converter Temperature Interval Converter Thermal Expansion Converter Thermal Resistance Converter Thermal Conductivity Converter Specific Heat Capacity Converter Heat Density Converter

Heat Flux Density Converter Heat Transfer Coefficient Converter Fluids converters Flow - Mass Converter Flow - Molar Converter Mass Flux Density Converter Concentration - Molar Converter Concentration - Solution Converter Viscosity - Dynamic Converter Viscosity - Kinematic Converter Surface Tension Converter Permeability Converter Light converters Luminance Converter Luminous Intensity Converter Illumination Converter Digital Image Resolution Converter Frequency Wavelength Converter Electricity Converters Charge Converter Linear Charge Density Converter Surface Charge Density Converter Volume Charge Density Converter Current Converter Linear Current Density Converter Surface Current Density Converter Electric Field Strength Converter Electric Potential Converter Electric Resistance Converter Electric Resistivity Converter Electric Conductance Converter Electric Conductivity Converter Electrostatic Capacitance Inductance Converter Magnetism converters Magnetomotive Force Converter Magnetic Field Strength Converter Magnetic Flux Converter Magnetic Flux Density Converter Radiology converters Radiation Converter Radiation-Activity Converter Radiation-Exposure Converter Radiation-Absorbed Dose Converter Other Converters Prefixes Converter Data Transfer Converter Sound Converter Typography Converter Volume - Lumber Converter A unit is a measurement of a quantity that is defined or adopted by tradition or law. Other quantities can be expressed as a multiple of the unit. In human history, various unit systems were developed and used in different regions and cultures. Currently, the global standard of measurement is the International System of Units (SI), which is a modern form of the metric system. Although SI is intended for global use, it has not been fully adopted, and some other systems of measurement are still used in parts of the world. The intent of this site is to provide a convenient means to convert between the various units of measurement within different systems, as well as to provide a basic understanding of the systems currently in use, and how they interact. Refer to the Common Unit Systems page for further information.