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Sunscreen Calculator
Calculate required sunscreen lotion amount and reapplication schedule
Dermatology Rule: Standard full-body adult application requires approximately $1\text{ ounce}$ ($30\text{ ml}$ or about a shot glass full) of sunscreen. Enter your coverage parameters below.
Sunscreen Parameters Input
Calculation Results
⚠️ Always reapply sunscreen every 2 hours, or immediately after swimming, heavy sweating, or towel drying!