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Plan your tan.

Know the live UV index, learn exactly how long you can stay out before you burn, and time your SPF — sun-care, planned by the hour.

Check live UV or, how long can I tan? →

Free sun-care tools

Everything runs in your browser — no account, no tracking your skin.

Tanning Time Calculator

Enter your skin type, the UV index and your SPF to see how long you can stay in the sun before you burn.

UV Index Now

Check the live UV index for your location, see today’s peak, and find the safest window to be outside.

SPF Calculator

Work out how long your sunscreen really protects you and when to reapply for your skin type and UV level.

Vitamin D Calculator

Estimate how much midday sun your skin needs to make vitamin D — without tipping over into a burn.

Skin Type Quiz

Answer six quick questions to find your Fitzpatrick skin type — the number every other tool here needs.

The UV index, at a glance

The higher the number, the faster unprotected skin burns. Here is what each band means.

0–2
LowMinimal risk. Safe to be outside; sunglasses on bright days.
3–5
ModerateStay in shade near midday. SPF 30, hat and sunglasses.
6–7
HighProtection needed. SPF 30+, shade 10am–4pm, cover up.
8–10
Very HighExtra protection. Avoid midday sun; SPF 50, hat, shade.
11+
ExtremeTake all precautions. Avoid the sun midday; unprotected skin burns fast.
Read the full UV index guide

Live UV index by city

Today’s UV index, peak time and safe tanning window for popular spots.

Los Angeles

California, USA

Miami

Florida, USA

Phoenix

Arizona, USA

New York

New York, USA

Las Vegas

Nevada, USA

San Diego

California, USA

Honolulu

Hawaii, USA

Austin

Texas, USA

Sun-care guides

Tan smarter and protect your skin — from the UV index to SPF.

What Is the UV Index? A Plain-English Guide

What the 0–11+ scale means, how it’s measured, and what to do at each level.

Read guide

The Fitzpatrick Skin Type Scale Explained

The six skin types, how to find yours, and why it changes your safe sun time.

Read guide

How to Tan Safely Without Burning

Build a tan with the lowest risk — timing, SPF, reapplication and the signs to stop.

Read guide

How to Choose & Use SPF Sunscreen

What SPF numbers mean, how much to apply, the two-finger rule and when to reapply.

Read guide

The Best Time of Day to Tan

Why the sun peaks 10am–4pm, how to read the UV curve, and the shadow rule.

Read guide

Getting Vitamin D From Sunlight

How sun makes vitamin D, how much you need, and doing it without a burn.

Read guide
The TanCare app

Your tan, planned by the hour.

Everything on this site, plus live UV by the hour, a burn-timer that counts down for your skin, SPF reapply reminders and push alerts the moment your safe window opens.

Live UV forecast Burn timer Safe-window alerts
App Store Google Play Coming soon