Arm span

Arm span or reach (sometimes referred to as wingspan, or spelled armspan) is the physical measurement of the length from one end of an individual's arms (measured at the fingertips) to the other when raised parallel to the ground at shoulder height at a 90° angle.

Age, sex, and ethnicity[1] have to be taken into account to best predict height from arm span.

[2] Arm span is sometimes used when a height measurement is needed but the individual cannot stand on a traditional stadiometer or against a wall due to abnormalities of the back or legs, such as scoliosis, osteoporosis, amputations, or those who are confined to a bed or wheelchair.

An above-average reach may be advantageous in sports such as Australian rules football, basketball, tennis, boxing, mixed martial arts, volleyball, discus throw, fencing, rock climbing, and swimming.

[4] Another example is current UFC Heavyweight and former UFC Light Heavyweight Champion Jon Jones, who is 193 cm (6 ft 4 in) tall, but has an advantageous reach of 215 cm (7 ft 0.5 in).