Layering System Calculator
Clothing layers from activity level and temperature.
Inputs
Results
Required CLO value
1.46
Wind chill (°F)34
Effective temp (°F)42
Base layer1
Mid layers1
Wind shell0
Insulated jacket0
Total layers2
How to Use This Calculator
- Enter expected temperature range (°F or °C), precipitation probability (%), and wind speed (mph).
- Enter activity level (resting, light hiking, strenuous) and trip duration (hours or days).
- Read recommended base layer, mid layer, and shell specifications for the conditions.
- Review insulation weight (g) and packability for the mid layer recommendations.
- Adjust the system for versatility — choose layers that can be worn in multiple combinations.
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