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Calculate Your Vent Length |
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To use this calculator, first you will need to choose whether you want a round or a square port. Then, enter your internal box volume (in cubic feet). Next, you enter either an inside diameter for the tube you are using if you want a circular port, or the inside dimensions of the square port you are going to build into your box (make sure you click the "Slot Port" button if you are designing a slot port - if you don't understand the difference between a square vent and a slot vent, click here). And finally, press the "Calculate Length" button at the bottom, and your answer will appear in the "Vent Length" box. |
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Select Your Port Type Round Square |
Is this a slot port ? No Yes |
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Quantity of ports Enter Enclosure Volume (ft3 ) Enter Desired Tuning Frequency Hertz |
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Round Vent Enter Desired Port Diameter Inches |
Square Vent Enter Height Inches Enter Width Inches |
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Vent Length Inches |
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If you come up with a value too long for your enclosure, enter a smaller number(s) for the diameter, or the heighth/width of your vent(s), and click the "Calculate Length" button again to recalculate (you don't need to reload the page). |