The Calculator Site
Includes online conversion and calculation tools. Possible to change the precision of the result.
Put in a number and get the Chinese representation of that number. Also, converts from Arabic numeral back to the Chinese form.
Provides a set of unit converters and explanations of each unit.
Provides online conversions between a number of types of units of measurements.
Features converter tools for measurement, currency exchange, world time zones, time, finance, driving distance, Roman numerals, atmosphere, and body mass index. Also, has a basic calculator and periodic table.
Online conversions for many measurement systems.
Provides various online unit conversion tools including area, volume and permeability.
Interactive multi-lingual conversion calculator for a wide variety of units.
eFunda: Units and Constants
Convertor for a wide range of units, fundamental constants and currencies.
Imperial and Metric Online Conversion
Multilingual conversion tool for units including area, currency, energy, flowrate, force, length, mass, power, pressure, temperature, velocity and volume. Historical Greek and Roman units can also be converted.
Live Currency Converter
Provides a free online currency converter and a table of different exchange rates.
Provides free online conversion tools, which can be added to any websites. It also offers metric conversion tables for download and print.
Metric Unit Conversion
Online conversion calculators for the units of weight, length, temperature, volume and area.
Offers conversion tools for length, volume, temperature, astronomical, clothing sizes, computer bytes, cooking measurements, time zones, density, energy, finance, flow rates, force frequency, and some fun pages.
Offers online unit conversion and calculation tools with corresponding math formulas. Plus conversion validation and unit lookup tools.
Provides a free online conversion tool to easily convert between different units of measurement in more than 70 categories.
Unit Conversion and Reference Tables
Features converters for physical constants, SI units, temperature, currency and temperature.
Conversion tools for different types of units in different languages.
Provides unit conversion tools for various math and physical units in different languages.
WWW Unit Converter
Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.