Library → Reference → Virtual Reference → **Calculators**

- Algebra.Help - Percentage Calculators
- CalculateMe.Com Shows conversions and calculations for temperature, weight, exchange rates and much more.
- Calculator.Com Standard, scientific, graphing, fractions, percent, mortgage, loan, lease, time, temperature, area, feet and inches and units are some of the calculators available at this Web site.
- Common Equivalent Weights and Measures, College of Chemistry, University of California, Berkeley
- ConvertMe.Com Several calculators for converting weight and mass; distance and length; capacity and volume; area; speed; temperature; time; pressure; energy, work and torque; power; circular measure; and computer storage.
- Currency Exchange Converter Plug in your country's currency and convert it into another country's currency.
- EquPlus.Net Science and math equations. Calculations and formulas in algebra, calculus, geometry, trigonometry, chemistry, physics, signal processing, and statistics. Equations available in TeX, MathML, png-image and MathType format.
- How Far Is It? Calculates the distance between two places.
- Martindale's Calculators Online Links to many online calculators from all different disciplines and subjects
- Realtor.Com Several different calculators (salary, moving, relocation, communities, rent vs. buy, etc.)
- Salary Calculator Realtor.Com's calculator to compare costs of living for different cities.
- Mathematical Notation for Orders of Magnitude
- MortgageLoan.Com Financial and Mortgage Calculators, Over 100 Personal Finance Calculators, including mortgage, home equity loan and line of credit, auto loan and lease, CD and investment, debt and credit, student, personal finance, tax and retirement calculators.
- S.O.S. MATHematics "A free resource for math review material from Algebra to Differential Equations! The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....Browse our more than 2,500 Math pages filled with short and easy-to-understand explanations. Click on one of the following subject areas: Algebra, Trigonometry, Calculus, Differential Equations, Complex Variables, Matrix Algebra, or Mathematical Tables. You can find topics ranging from simplifying fractions to the cubic formula, from the quadratic equation to Fourier series, from the sine function to systems of differential equations - this is the one stop site for your math needs."
- Universal Currency Converter