Like other toucans, the white-throated toucan is brightly marked and has a huge bill. It has a total length of 50–61 cm (19.5–24 in). Body weight is somewhat variable, ranging in adult birds from 425 to 830 g (0.937 to 1.830 lb). The male averages slightly larger, at a mass of 642 g (1.415 lb), while the female averages 580 g (1.28 lb). However, the subspecies R. t. cuvieri is larger, with males averaging 702 g (1.548 lb) and females averaging 687 g (1.515 lb). Among standard measurements, the wing chord is 20.4 to 26.5 cm (8.0 to 10.4 in), the bill is 12.2 to 22 cm (4.8 to 8.7 in), the tail is 13.3 to 16.8 cm (5.2 to 6.6 in), and the tarsus is 4.5 to 5.6 cm (1.8 to 2.2 in). The only species of toucan that surpasses the white-throated in size is the toco toucan, however the R. t. cuvieri subspecies of white-throated toucan appears to perhaps be even heavier than the Toco species.