# Math Tools and Calculators

*Here are some really useful applications to speed your way to that all-important solution.*

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. |

Calculator | Enter formulas such as (3+2/9)^2 or sin(1/5), has history and even a slider for an "a" value. |

Scientific Calculator | Accepts formulas such as (3+2/9)^2 or sin(1/5) and you can also click on a keypad. |

Sigma Calculator | See what happens when you sum up a series of functions. |

Unit Converter | A neat yet powerful Unit Converter. Can convert length, mass, volume, temperature and more. Hundreds of imperial and metric units are supported |

Area Calculation Tool | Calculate the areas of common shapes such as triangles, circles and ellipses |

Polyhedron Models | Spin, explode and see the nets of over 100 polyhedra. |

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? Done! |

Quadratic Equation Solver | Have an equation like "? We can solve it!ax"^{2} + bx + c = 0 |

Function Grapher and Calculator | You can plot two functions together, and even save the results as a web link. |

Equation Grapher | Graph equations like "x^{2}+y^{2}=2" |

3D Function Grapher | Plot an f(x,y) style function like x^2-y^2 |

Complex Number Calculator | Enter the formula, see the result. |

Counting Money | Its a game, but also useful for adding up money. |

Mix Slider | Find the right amounts of a mixture. |

Power Set Maker | Makes Power Sets from Sets |

Decimal to Fraction Calculator | 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. |

Sigma Calculator | Add up a sequence. |

Vector Calculator | Convert between magnitude/angle and x,y. Add vectors. Dot product. |

Matrix Calculator | Do matrix calculations such as Determinant, Inverse and Multiplication |

Data: | |

Standard Deviation Calculator | Shows you the results at every stage of the calculation |

Confidence Interval Calculator | Confidence Interval Calculator |

Chi-Square Calculator | Chi-Square Test Calculator |

Correlation Calculator | Correlation Calculator |

Least Squares Calculator | Least Squares Regression Calculator |

Integral Approximation Calculator | Integral Approximation Calculator |

Fourier Series Grapher | Fourier Series Grapher |

Money: | |

Investment/Loan Graph | Investment or Loan Graph |

## Other Cool Stuff

App | Description |
---|---|

Spiral Artist | Spiral Artist |

Symmetry Artist | Symmetry Artist |

Tessellation Artist | Tessellation Artist |

General Drawing Tool | General Drawing Tool |

Gravity Freeplay | A simulation of how suns, planets, moons, etc behave under the influence of gravity |

Moire Patterns | Explore the interesting "interference patterns" created by overlapping grids, lines, etc |

Estimation Games | Try your estimation skills |