UV Index

UV & Sun-Safety Tools

Free calculators to plan safe time in the sun — based on the WHO UV scale and the Fitzpatrick skin-type model.

Time-to-Burn Calculator

How long until your skin burns at a given UV level, skin type and surface.

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Sunscreen / SPF Timer

How long an SPF protects you, and when to reapply.

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Vitamin D Calculator

How much sun exposure you need for enough vitamin D.

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