Instructions:

- Make sure you have Java turned on in your browser.
- Enter required information.
- Click "Calculate" to get the answers.
- The calculators will give accurate results only for rectangular shaped objects.
Calculators:

- Box Dimensions Calculator: Figures out third dimension of a box, given two known dimensions, required internal volume and material thickness. For example, if you have the length and height of a part of your trunk, and need to figure out the width of the box: Enter the two dimensions you have measured, enter the internal volume, and the thickness of the wood. If you are placing objects inside the box, such as braces, or a piece of wood to separate the box into two independent boxes for two woofers, use the "Solid Object Volume Calculator."
- Solid Object Volume Calculator: Figures out volume of an object to be placed inside a box. Then add result to "required internal volume" in the "Box dimensions Calculator".
- Conversion Factors: Metric to English units, Cubic inches to cu ft, etc.

- cu in / 1728 | = | Cubic feet |

- cu ft x 1728 | = | Cubic inches |

- cu ft x 28320 | = | Cubic centimeters |

- cm x 0.394 | = | Inches |

- in x 2.540 | = | Centimeters |

- ft x 30.48 | = | Centimeters |

- ft x .3048 | = | Meters |

- m x 3.281 | = | Feet |

Power Cable Calculator | |||||||
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Total Amperage Draw of System |
Up to 4 ft. | 4 to 7 ft. | 7 to 10 ft. | 10 to 13 ft. | 13 to 16 ft. | 16 to 22 ft. | 22 to 28 ft. |

0 - 20 | 14 | 12 | 12 | 10 | 10 | 8 | 8 |

20 - 35 | 12 | 10 | 8 | 8 | 6 | 6 | 4 |

35 - 50 | 10 | 8 | 8 | 6 | 4 | 4 | 4 |

50 - 65 | 8 | 8 | 6 | 4 | 4 | 4 | 2 |

65 - 85 | 6 | 6 | 4 | 4 | 2 | 2 | 0 |

85 - 105 | 6 | 6 | 4 | 2 | 2 | 2 | 0 |

105 - 125 | 4 | 4 | 4 | 2 | 0 | 0 | 0 |

125 - 150 | 2 | 2 | 2 | 0 | 0 | 0 | 00 |

The above chart shows wire gauges to be
used if no less than a .5 volt drop is accepted. Cable size calculation takes into account terminal connection resistance. |