PCS weight allowance is a cap on how many pounds you can move. When the military assigns you to a permanent change of station, you'll receive a predetermined PCS weight allowance for your move. For those without dependents, 14,000 pounds is usually the maximum weight allowance.
This allowance is based on your rank and offers a set weight limit for how much you can move with you. If you exceed the allowance, you'll have to pay for the overage out of pocket after your move is complete.
Your PCS will also vary based on dependents. The number doesn't matter — whether you have one or 10 dependents, your extra allowance will be the same. Your dependents don't need to be traveling with you in order to make you eligible for the additional allowance, either, and the extra applies even for the first move after you get a divorce or your dependents die.