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This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.

Conversion and Calculation Center home page that contains links to our measurement conversion, currency exchange rate, world time zone, reference information, and other pages.

This online unit conversion tool will help you convert measurement units anytime and solve homework problems quickly using metric conversion tables, SI units, and more.

The richest collection of free online calculators, including mortgage, loan, BMI, weight watchers points calculator and hundreds more...

Easy epoch/Unix timestamp converter for computer programmers. Includes epoch explanation and conversion syntax in various programming languages.

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Calculators online for finance, math, algebra, trigonometry, fractions, physics and time. Use an online calculator, search or suggest a new calculator that we can build for free online use. Conversions and calculators to use online for free. Formerl...

Online Conversion is a resource for weights, measures, calculators, converters.

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PHP F1 - Help in PHP, get PHP code, scripts, tutorials