UPF vs. SPF

Allrecipes - - Mixer -

Ul­tra­vi­o­let

Pro­tec­tion Fac­tor

(UPF) rat­ings on cloth­ing are sim­i­lar to Sun Pro­tec­tion

Fac­tor (SPF) rat­ings you see on

sun­screens. The UPF rat­ing is tied to the per­cent­age of UV rays blocked:

UPF 15-24

93.3-95.9% blocked

UPF 25-39

96-97.4% blocked

UPF 40-50+

97.5-98% blocked

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