UV index to minutes to sunburn
Type a value in UVI to get it in min instantly.
That's 1.14× as strong as a European summer day, while a Mediterranean summer noon is 1.13× stronger. That is very high: avoid the midday sun.
Convert the other way: min to UVI
What it means
How strong is that sun?
Information only. Burn times are for unprotected skin in full sun and vary a lot between people; sunscreen, shade and reflection from snow or water change them.
The math
How to convert UVI to min
One UV index point is 25 mW/m² of erythemal UV. Minutes to burn are MED ÷ (UVI × 0.025 W/m² × 60), using the skin type chosen above.
Example: 8 UVI = 20.8333 min.
Burn times below are for Type II: fair, usually burns. Change it above and they update.
Every unit
Your UV index in every unit
Tables
UVI to min conversion table
| UVI | min |
|---|---|
| 1 UVI | 166.667 min |
| 2 UVI | 83.3333 min |
| 3 UVI | 55.5556 min |
| 4 UVI | 41.6667 min |
| 5 UVI | 33.3333 min |
| 6 UVI | 27.7778 min |
| 7 UVI | 23.8095 min |
| 8 UVI | 20.8333 min |
| 9 UVI | 18.5185 min |
| 10 UVI | 16.6667 min |
| 11 UVI | 15.1515 min |
| 12 UVI | 13.8889 min |
| 14 UVI | 11.9048 min |
min to UVI conversion table
| min | UVI |
|---|---|
| 1 min | 166.667 UVI |
| 2 min | 83.3333 UVI |
| 3 min | 55.5556 UVI |
| 4 min | 41.6667 UVI |
| 5 min | 33.3333 UVI |
| 6 min | 27.7778 UVI |
| 7 min | 23.8095 UVI |
| 8 min | 20.8333 UVI |
| 9 min | 18.5185 UVI |
| 10 min | 16.6667 UVI |
| 11 min | 15.1515 UVI |
| 12 min | 13.8889 UVI |
| 14 min | 11.9048 UVI |
Quick answers
Quick answers
- How many min is 1 UVI?
- 1 UVI is 166.667 min.
- How many min is 10 UVI?
- 10 UVI is 16.6667 min.
- How many min is 8 UVI?
- 8 UVI is 20.8333 min.
The units
About these units
UV index (UVI)
The WHO scale: 25 mW/m² of sunburn-weighted UV per point.
Minutes to sunburn (min)
Unprotected time to reach a burning dose for the chosen skin type.
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