How To Measure Penis size

how to measure your penis

Learning how to measure your penis correctly helps ensure that you buy our Hydropump that are properly sized and fits snugly. This not only involves measuring the length of your penis from the tip of the head to the pubic bone but also the width and girth (circumference) where the penis is widest. You need to do so with a ruler or measuring tape while you have an erection (stiff penis).

If you don’t measure your penis correctly and an external Bathmate pump is too loose, it can be a low power pressure. If the Batnmate pump is too small, it may not only be uncomfortable but may actually hurt your penis.

measuring penis length



1. Get an erection

It’s important to measure your penis when it’s erect, as flaccid measurements can vary significantly.



2. Use ruler or measuring tape

Choose a reliable measuring tool that provides accurate measurements.



3. Position yourself

Stand up or lie down in a comfortable position, ensuring that your penis is fully erect.



4. Press the ruler against the pubic bone

Place the ruler against the base of your penis, just above the pubic bone.



5. Measure along the top

With a gentle grip, press the ruler into the pubic bone and measure along the top of your penis up to the tip.



6. Note the measurement

Take note of the measurement in inches or centimeters.

measuring penis girth



1. Get an erection

As with measuring length, it’s important to have an erect penis for accurate girth measurements.



2. Use a measuring tape or string

Choose a flexible measuring tool that can wrap around the circumference of your penis.



3. Wrap the tape around the thickest part

Take the measuring tape or string and wrap it around the thickest part of your penis. This is usually around the middle of the shaft.



4. Ensure a snug fit

Make sure the tape or string is snug against your skin without being too tight or loose.



5. Note the measurement

Measure the length of the tape or string in inches or centimeters and record the measurement.

Choose Hydropump Based On Your Penis Size

Make sure you choose the right size to maximize performance. Measure the length and thickness of your penis when erect. Then select the range of penis length below. If you not unsure about your size? Click here to learn our size guide


Up to 5 Inches


Between 5 to 7 Inches


Between 7 to 9 Inches


More Than 9 Inches