# Comparison of online calculators

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## Contents |

## General-purpose calculators

These calculators are online substitutes for the standard calculator. They serve a general mathematical purpose.

Price | Simple operators^{[note 1]}
| Roots^{[note 2]}
| Logarithms^{[note 3]}
| Trigonometric functions^{[note 4]}
| Scientific notation | Expressions | Units | Calculation history (tape) | Graphing | Website | |
---|---|---|---|---|---|---|---|---|---|---|---|

Calc5 ^{[1]}
| Free | Yes | Yes | Partial | Yes | No | Yes | No | Yes | Yes | calc5.com |

Calcoolate | Free | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | calcoolate.com |

Calculator Tab | Free | Yes | Yes | Yes | Yes | Yes | No | No | No | No | calculator-tab.com |

eCalc | Non-freeUS$15 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | ecalc.com |

Google ^{[2]}
| Free | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | google.com |

instacalc ^{[3]}
| Free | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | instacalc.com |

Metacalc | Free | Yes | Partial | No | No | No | No | No | No | No | metacalc.com |

Virtual Calc98 | Free | Yes | Partial | Yes | Yes | Yes | No | No | No | No | calculator.org/jcalc98.aspx |

Visual Calculator ^{[4]}
| Free | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | No | visualcalculator.com |

web2.0calc ^{[5]}
| Free | Yes | Yes | Yes | Yes | No | Yes | No | Yes | Yes | web2.0calc.com |

WolframAlpha ^{[6]}
| Free | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | wolframalpha.com |

## Special-purpose calculators

### Graphing calculators

Graphing calculators are used to visually depict the relationship between variables in either two or three dimensions.

Price | Expressions | Equations | Polar coordinates | Derivatives | Parametric curves | Website | |
---|---|---|---|---|---|---|---|

Calc5 ^{[7]}
| Free | Yes | No | No | Yes | No | calc5.com |

e-Tutor Graphing Calculator ^{[8]}
| Free | Yes | No | No | No | No | e-tutor.com/et2/graphing |

GCalc | Free | Yes | No | No | No | No | gcalc.net |

web2.0calc ^{[9]}
| Free | Yes | No | No | Yes | No | web2.0calc.com |

WolframAlpha ^{[10]}
| Free | Yes | Yes | Yes | Yes | Yes | wolframalpha.com |

### Advanced scientific and engineering calculators

These calculators are specifically suited for calculations in a field of science or applied science. They fill a specific gap left by more general calculators, but are often not suitable for general use.

Price | Primary field or use | Website | |
---|---|---|---|

Astro-Physical Calculator | Free | Astrophysics | astro.wisc.edu/~dolan/constants/calc.html |

Calculate Logarithm | Free | Logarithms | rechneronline.de/logarithm |

Calculator Edge | Free | Engineering | calculatoredge.com |

DiGiTconvert | Free | Base conversion | digitconvert.com |

### Practical calculators and collections

These calculators have both a narrow purpose and a practical application, such as an amortization calculator. Several websites have extensive collections of narrow use, but practical calculators such as this.

Price | Purpose | Website | |
---|---|---|---|

Bankrate Calculators | Free | Finance | bankrate.com/calculators |

Calculator.com | Free | Various | calculator.com |

Calculator.net | Free | Various | calculator.net |

Martindale's Calculators On-Line Center | Free | Various | martindalecenter.com/Calculators.html |

Online Conversion | Free | Unit conversion | onlineconversion.com |

## See also

## Notes

- ↑ Supports addition, subtraction, multiplication, division, and exponentiation.
- ↑ Supports either a function for performing arbitrary roots or exponentiation to arbitrary fractional powers. Support for only square or cube roots constitutes partial support.
- ↑ Supports both the natural logarithm and base-10 logarithm. Support for only one of these constitutes partial support. Support for logarithms to an arbitrary base is rarely found in a general-purpose calculator and is therefore not a requirement.
- ↑ Supports at a minimum the sine, cosine, and tangent functions in either radians or degrees.

## References

- ↑ "calc5 Help"
- ↑ "How to use the Google calculator"
- ↑ InstaCalc Command Reference
- ↑ "Scientific Functionality of Visual Calculator"
- ↑ web2.0calc.com Help / Standard Functions
- ↑ Wolfram|Alpha Examples - Mathematics
- ↑ "calc5 Help"
- ↑ "e-Tutor - Graphing Calculator - Instructions"
- ↑ web2.0calc.com Help / Standard Functions
- ↑ Wolfram|Alpha Examples - Plotting & Graphics