1. Stand up straight with your feet shoulder-width apart.
2. Hold the yo-yo string against your belly button.
3. Let the yo-yo hang down toward the floor.
4. The ideal standard length is where the yo-yo reaches roughly 1–2 inches off the ground.
Pro Tip:
If you are a beginner, start with a slightly longer string. You can always trim it shorter, but you can't add length back!