Sunscreen Use Planner

Estimate application quantity and create a product-label-driven reminder schedule.

Educational planning only: this tool does not predict SPF, protection, UV risk, burn time, or skin outcomes, and reapplication is not claimed to restore protection. Follow the product label and medical advice. Cover exposed skin broadly and use shade, clothing, hats, and other recommended sun-protection measures.

Exposed area

Area method

Exposed areas (educational adult estimates)

Target application density (mg/cm²)Product mass density (g/mL)

The editable 2 mg/cm² default is a planning assumption, not a personalized recommendation. Product mass density defaults to 1 g/mL solely for mass↔volume conversion; use product information if available.

Activity and label

Activity startActivity endLabel reapplication interval (hours)

An end time at or before the start is treated as the next day.

Water, heavy sweat, or towel events (one per line: HH:MM | note)

Events add planning reminders at the entered time. Follow the label’s exact water-resistance and reapplication directions.

Container

Container quantityUnitContainers / activity days to pack for

Portable plan

Import JSON

Quantity and schedule

Enter details to calculate.

Planned application reminders
Application	Time	Reason	Estimated g	Estimated mL

The packing count rounds up to whole containers. Scheduled interval reminders include boundaries at or before the activity end; simultaneous event/interval reminders are combined.