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All converters

Temperature ConverterTemperature Converter
Convert temperature between Celsius, Fahrenheit and Kelvin.
Radius ConverterRadius Converter
Easily convert between radius, diameter, circumference, circle area, sphere volume and sphere surface area.
Roman Numerals ConverterRoman Numerals Converter
Convert between Roman numerals and Arabic numerals.
Radix ConverterRadix Converter
Convert between binary, octal, decimal and hexadecimal numbers.
Distance ConverterDistance Converter
Convert between the most common distance units.
Mass ConverterMass Converter
Convert between the most common mass units, such as kilograms, pounds and ounces.
Angle ConverterAngle Converter
Convert between the angle units radians degrees and gradians.
Time ConverterTime Converter
Convert between the time units seconds, minutes, hours, days, weeks, months and years.