Sites that assist with mathematical calculations, including online
calculators and conversion dictionaries and tables.
Calculator.com
Directory of online calculators, browsable by subject or function.
Calculators for cooking, design, sports, time, currency, time, unit
convertors, scientific functions and some just for fun.
Common weights
and measures
Includes mathematical notations for orders of magnitude, metric
prefixes and common US and metric equivalents.
MegaConvertor
Collection of weights, measures and units conversion/calculation
tools. It helps you find out things like how many seconds old you
are, what ever is a nebuchadnezzar, how many nanometers in an inch
and other weird and wonderful information.
Metric Conversion
Table
From the US Government Dept, this list provides the right conversion
relationship between US and international system units. Great for
students of physics and chemistry.
Periodic
table toolbox
This site allows you to add different elements together to make
a custom compound which will be displayed with atomic mass and charge.
A great tool to help with your chemistry problems
Roman
Numeral Date Conversion Table
Guide to deciphering Roman year dates. Explains the basic principles
for converting numbers from Roman to Arabic.
Surface
distance between points of Latitude and Longitude
Javascript program to calculate great circle distance
using latitude and longitude points on the earth.
Time Zone
Converter
What time is it in...? Now you can find out the time anywhere in
the world. The time zone rules on which the convertor is based are
updated whenever local ordinances change to provide you with accurate
readings.
Travel Tools
Fantastic tools for international travelers, including a world public
holidays calendar, currency convertor, maps, metric convertor, weather
sites, electricity requirements by country, dialing codes, international
clothing size chart, time zone clock.
Universal currency convertor
Interactive foreign exchange rate conversion. Type the amount of
source currency in the input box, and select the destination currency
using the scrolling selection boxes.
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