basic

UV Index Skin Burn Time Calculator

Burn time = MED / (UV_index × 250/60) minutes.

Estimates the time to sunburn (minutes) from UV index and skin type (Minimal Erythemal Dose). Enter SPF to calculate protected exposure time.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

T_burn = MED_Jm2 × 60 / (UV × 250); T_protected = T_burn × SPF

In depth

Estimates the time to sunburn (minutes) from UV index and skin type (Minimal Erythemal Dose). Enter SPF to calculate protected exposure time.