health · free Companion App · local in this browser
Sunscreen Amount Calculator
Calculate sunscreen volume needed for adults and kids over hours outside.
Enter your numbers
Enter only the details needed for this task. Check them against the original source.
Your result
This tool gives general information. It is not medical advice. Speak to a licensed clinician before you make a health decision.
Your result will appear here.
Engine self-test
Running golden cases…
Source notes
- American Academy of Dermatology — Sunscreen FAQs
Most adults need about one ounce (enough to fill a shot glass) of sunscreen to cover exposed skin for one application, with reapplication every two hours.
Reviewed 2026-10-10. Individual needs vary by size and clothing; seek shade during peak hours too.
What this App does not do
This is general guidance. Reapply as directed and seek shade during peak hours.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.