Estimate sun exposure, UV risk, sunburn concern, sunscreen reapplication timing, and shade needs for hiking, camping, backpacking, gardening, outdoor work, sports, and long days outside. This calculator factors in UV index, time outside, cloud cover, altitude, skin sensitivity, sunscreen SPF, clothing coverage, shade, reflection, and activity level.
UV intensity:
The calculator starts with the UV index and adjusts it for cloud cover, altitude, time of day, shade, and reflective surfaces.
Personal protection:
Skin sensitivity, sunscreen SPF, sunscreen application, clothing coverage, sweat, and water exposure are used to estimate practical exposure risk.
Outdoor planning:
The result estimates sunburn concern time, sunscreen reapplication timing, shade need, and an overall solar exposure score.
A solar exposure calculator helps plan sun protection for hikes, camping trips, beach days, gardening, outdoor jobs, sports, fishing, boating, and long trail days.
Actual sun exposure depends on UV index, latitude, season, cloud thickness, elevation, reflection, skin sensitivity, sunscreen amount, sweat, water, medication, and how much skin is covered.
This calculator uses a practical sun-exposure planning estimate:
Exposure Score = adjusted UV × time × skin sensitivity × reflection × activity - sunscreen, shade, and clothing protection
Solar exposure is the amount of sunlight and ultraviolet radiation your skin and eyes receive during time outdoors.
No. Clouds can reduce UV, but significant UV can still reach the ground, especially with thin or broken clouds.
Yes. Higher altitude can increase UV exposure because there is less atmosphere above you to filter sunlight.
Many people reapply about every two hours, and sooner after sweating, swimming, towel drying, or heavy activity.