AskNumbers.com
This web site enables you to perform conversions in acceleration, computer storage, cooking, date/time, energy, speed, power, volume, etc.
Calculator.com
Offers a variety of calculators from standard addition, subtraction, multiplication, and division to scientific and graphing calculators.
Calculatorplus.com
Mortgage calculators, credit card calculators, auto calculators, retirement calculators and more.
Finaid Calculators
Links to calculators to help determine the cost of college, the expected family contribution, and the loan payments.
HomeFair
Relocation and moving calculators from Realtor.com.
Martindales Calculators On-Line Center
An extensive collection of calculators to meet most needs: mathematical and scientific calculators, medical and nutrition calculators, even grade point average calculators, and arts and crafts calculators. Arranged alphabetically by topic.
MegaConverter 2
MegaConverter 2 is an extension of MegaConverter.com with a selection of calculators and converters for weights, measures and units.
Zillow's Mortgage Education Center Calculators
Includes an array of mortgage calculators to help determine monthly payments, affordability, refinancing, closing costs, discount points and bi-weekly payments. You can also compare fixed or adjustable rates and mortgage terms. A HARP program eligibility calculator is also available.