Science

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.

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.

Provides various online unit conversion tools including area, volume and permeability.

Online conversions for many measurement systems.

Interactive multi-lingual conversion calculator for a wide variety of units.

Convertor for a wide range of units, fundamental constants and currencies.

Provides free online conversion tools, which can be added to any websites. It also offers metric conversion tables for download and print.

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.

Provides unit conversion tools for various math and physical units in different languages.

Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.

Includes online conversion and calculation tools. Possible to change the precision of the result.

Provides online conversions between a number of types of units of measurements.

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.