UV Protection Factor Calculator

Calculate how long sunscreen protects you from UV radiation based on SPF, skin type, and UV index for safe sun exposure.

Sunscreen SPF

Skin Type (Fitzpatrick)

UV Index

Formula

Protected Time = Base Burn Time x SPF x (10 / UV Index); UV Blocked % = ((SPF - 1) / SPF) x 100

undefined

Free wind chill calculator. Calculate the wind chill temperature index from air temperature and wind speed.

Free heat index calculator. Calculate the heat index (feels-like temperature) from air temperature and relative humidity.

Free solar panel savings calculator. Calculate solar panel savings values for research and education.