UV index burn time calculator
Choose the UV index and your skin type to see roughly how long unprotected skin takes to start reddening.






SPF Tanning shows the live UV index for your location and tells you exactly how long to stay out with your SPF. Get the glow without the sunburn.
A timer based on your skin type and SPF tells you how long to stay in the sun.
See the live UV index for your exact location.
SPF reminders tell you when it's time for more sunscreen.
Keep an eye on the vitamin D you get from sunlight.
It uses the live UV index for your location together with your skin type and SPF to time each session, and alerts you when your skin is at risk of burning.
No level is completely safe: UV damages skin even when it doesn't burn. Our guide to the UV index for tanning explains what the numbers mean.
No. It helps you time your sun exposure and remember to reapply; sunscreen, shade and clothing still do the protecting.
It's free to download on the App Store and Google Play. Using it requires a subscription, and a free trial is available.
The privacy details on its store listing show exactly what the app collects. Our privacy policy explains how that data is used and how to request deletion.
Download it free on the App Store.