Sunscreen SPF Calculator

Get personalized sunscreen recommendations based on your skin type, UV conditions, and sun exposure activities.

Personal & Environmental Factors

Type I - Very Fair
Always burns, never tans
Type II - Fair
Usually burns, tans minimally
Type III - Medium
Sometimes burns, tans gradually
Type IV - Olive
Rarely burns, tans easily
Type V - Brown
Very rarely burns, tans very easily
Type VI - Dark
Never burns, always tans darkly
Low (1-2) Moderate (3-5) High (6-7) Very High (8-10) Extreme (11+)
Moderate Risk

Understanding Sun Protection

What is SPF?

SPF (Sun Protection Factor) measures how well a sunscreen protects against UVB rays, which cause sunburn. SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks about 98%. The difference in protection is minimal, but higher SPF may provide longer protection time.

Skin Types (Fitzpatrick Scale)

Types I & II

Very fair to fair skin. Burns easily, tans poorly. Requires highest SPF protection (30-50+).

Types III & IV

Medium to olive skin. Sometimes burns, tans gradually. SPF 15-30 usually sufficient.

Types V & VI

Brown to dark skin. Rarely burns, tans easily. SPF 15-30 recommended for extended exposure.

UV Index Guide

  • 1-2 (Low): Minimal protection needed for normal activities
  • 3-5 (Moderate): Protection needed during midday hours
  • 6-7 (High): Protection required, avoid midday sun
  • 8-10 (Very High): Extra protection essential, minimize sun exposure
  • 11+ (Extreme): Maximum protection required, avoid sun when possible

Application Tips

  • Apply 1 ounce (2 tablespoons) for full body coverage
  • Use 1/4 teaspoon for face and neck
  • Apply 15-30 minutes before sun exposure
  • Reapply every 2 hours or after swimming/sweating
  • Don't forget ears, lips, feet, and back of hands
  • Use water-resistant formulas for swimming or sports
  • Check expiration dates - sunscreen loses effectiveness over time

Beyond Sunscreen

Sunscreen is just one part of sun protection. Also consider wearing protective clothing, wide-brimmed hats, UV-blocking sunglasses, and seeking shade during peak UV hours (10 AM - 4 PM). Remember that UV rays can penetrate clouds and reflect off surfaces like water, sand, and snow.