Enter the fill power, volume of down, and weight of down into the calculator to determine the missing variable.
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Fill Power Formula
The following formula is used to calculate the fill power for a given volume of down and weight of down.
FP = V / W
Variables:
- FP is the fill power
- V is the volume of down
- W is the weight of down
To calculate the fill power, divide the volume of down by the weight of down. This will give you the fill power, which is a measure of the loft or fluffiness of the down.
What is Fill Power?
Fill power is a measure of the loft or fluffiness of down insulation. It is defined as the number of cubic inches that one ounce of down can fill. Higher fill power indicates better insulation properties, as the down can trap more air and provide more warmth. Fill power is an important factor to consider when purchasing down jackets, sleeping bags, and other insulated gear, as it directly affects the warmth-to-weight ratio and overall performance of the product.
How to Calculate Fill Power?
The following steps outline how to calculate the Fill Power.
- First, determine the volume of down (V).
- Next, determine the weight of down (W).
- Finally, calculate the fill power using the formula FP = V / W.
- After inserting the values and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Volume of down (V) = 600 cubic inches
Weight of down (W) = 2 ounces