Sunscreen Timer Calculator

Calculate when to reapply sunscreen based on SPF and UV index.

Conditions

Skin Sensitivity

Sunscreen SPF

Activity Level

Protection Time

Reapply Every120 minStandard 2hr Limit Applied

Theoretical Burn Protection10.0 hours

Note: Even if calculated protection is longer, dermatologists insist on reapplying every 2 hours or immediately after swimming/toweling.

About this calculator

Overview

Sunscreen timer calculates reapplication time based on SPF, UV index, and skin type. Essential for sun protection and skin cancer prevention.

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Pro Tips

Fun Facts

Formula: Protection Time = SPF × Minutes to Burn; Reapply every 2 hours