Measurement Guide

Assumptions about penis size from finger length, foot size, and height are not supported by research. The only way to get accurate numbers for choosing the right hydropump is to measure the penis while it's erect.

Also, note that penis size can vary due to stress, fatigue, frequency of sexual activity, and level of arousal, so you may want to do several measurements at different times throughout the day, over several days. From that starting point, use the following guidelines for getting the length, girth, and width.

Measuring Penis Length

Start by measuring the length of your penis

  1. Position a ruler or measuring tape at the base of the erect penis, where it attaches to the body.
  2. Press into the pubic bone as far as you can, until you contact the bone. This is especially important if there's a lot of belly fat.
  3. Measure from the base to the end of the tip.

Measuring Penis Girth

Next, measure the girth of the penis (that is, the circumference or thickness).

  1. For this step, use a soft measuring tape or a piece of string. If you choose the latter, make sure it doesn't have any stretch. A length of yarn, for example, could introduce measurement errors.
  2. Gently wrap the tape or string one time around the thickest part of the shaft of the erect penis.
  3. Note where the ends of the tape meet; that's the number you're looking for. If you're using string, mark where the end of the string meets the rest of it, then stretch out the string and use a ruler to measure the distance from the mark to the end.
Measure Penis Size

Using Your Penis Size to Choose a Hydropump Range

Once you are confident that you have figured out your penis size, you can choose our hydropump based on your size bellow:

Note: Too small choosing hydropump can be uncomfortable, and one choose a bigger one make a results not maximum*