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Math Tools and Calculators

Here are some really useful mathematical tools to speed your way to that all-important solution. If you would like to contribute more tools please contact me

Tool / Calculator Description
Percentage Calculator Enter two numbers, and see not only the percentages, but how they are calculated.
Binary, Decimal, Hexadecimal Converter Convert between Binary, Decimal and Hexadecimal. Can handle fractions and negatives.
Prime Factorization Tool Want to know if a number is Prime? Or if not, which prime numbers are it's factors?
Straight Line Graph Calculator If you have two points and need to know the straight line formula (y=mx+b) that connects them.
Scientific Calculator We think this is the best calculator around, because it will accept formulas such as (3+2/9)^2 or sin(1/5)
Unit Conversion Tool A neat yet powerful unit conversion tool. Can convert lengths, weights, temperatures. Hundreds of imperial and metric units are supported
Area Calculation Tool Calculate the areas of common shapes such as triangles, circles and ellipses
Which day of the week were you born on Calculate the day of the week for any date between 1582 and 4902
Roman Numerals Can convert from/to Roman Numerals. What year was MDMCLXXI ?
Greatest Common Factor Tool Find the greatest common factor of 2 or 3 numbers. Useful for simplifying fractions.
Least Common Multiple Tool Find the least common multiple of 2 or 3 numbers. Useful for adding or subtracting fractions.
Full Precision Calculator Calculate answers to full precision. Want to multiply to hundreds of digits of accuracy? No problem!
Quadratic Equation Solver Have an equation like "ax2 + bx + c = 0"? We can solve it!
Function Grapher and Calculator You can plot two functions together, and even save the results as a web link.
Standard Deviation Calculator Shows you the results at every stage of the calculation
Complex Number Calculator Enter the formula, see the result.
Counting Money Its a game, but also useful for adding up money.
Power Set Maker Makes Power Sets from Sets
Decimal to Fraction Converter Converts Decimals to Fractional form, showing steps.
Combinations and
Permutations Calculator
Calculate Combinations and Permutations
All Factors Tool Find all the factors of a number.