UV Exposure Time Calculator
Calculate safe sun exposure time based on UV index and skin type.
Know when to seek shade or reapply sunscreen.
Safe Exposure Time
Safe sun exposure time depends on the UV index and your skin type.
Safe Minutes = (200 × Skin Type Factor) / (3 × UV Index)
UV Index Scale:
| UV Index | Level | Precaution |
|---|---|---|
| 0–2 | Low | Minimal protection needed |
| 3–5 | Moderate | Wear sunscreen, hat |
| 6–7 | High | Reduce midday exposure |
| 8–10 | Very High | Avoid midday sun |
| 11+ | Extreme | Stay indoors if possible |
Skin Type Factors:
- Type I (very fair): 2.5 min base
- Type II (fair): 3 min base
- Type III (medium): 4 min base
- Type IV (olive): 5 min base
- Type V (brown): 8 min base
- Type VI (dark): 15 min base
SPF multiplies your safe time (e.g., SPF 30 × 10 min = 300 min theoretical, but reapply every 2 hours).