Calculators and Converters

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Calculation & Conversion Tools - from the Internet Public Library

A select collection of the best online tools. Includes mathematical calculators, conversion dictionaries and tables.

Measure 4 Measure

An impressive collection of interactive calculators, estimators, translators, etc.

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Single-Purpose Tools

Currency Conversion - Yahoo! Finance

Currency Converter - oanda.com

Also includes a database of historical exchange rates and other online currency tools

Currency Converter - Universal Currency Converter(tm)

How Far Is It

Finds the latitude and longitude of two places and then calculates the distance between them

Inflation Calculator

"Adjusts any given amount of money for inflation, according to the Consumer Price Index, from 1800 to the present"

Official U.S. Time

"Cooperatively provided by the two time agencies of United States: a Department of Commerce agency, the National Institute of Standards and Technology (NIST), and its military counterpart, the U. S. Naval Observatory (USNO)."

Postal Rate Calculators - U.S. Postal Service

Gives domestic and international rates for letters and packages

Salary Converter

From the Center for Mobility Resources, allows comparisons of the cost of living in hundreds of U.S. and international cities

Weather Calculator

Provides temperature, moisture, pressure, wind speed and other conversions

World Clock

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