Sleeping Bag Temperature Calculator

Choosing the right sleeping bag temperature rating is crucial for a comfortable and safe night's sleep outdoors. Sleeping bag ratings follow EN/ISO standards that indicate the lowest temperature at which the bag will keep an average person warm. The "comfort rating" is the temperature at which a standard woman can sleep comfortably, while the "limit rating" applies to a standard man. The "extreme rating" is the survival temperature, not for regular use. Always select a bag rated lower than the expected nighttime temperature to account for individual differences in cold tolerance, humidity, wind chill, and the insulating properties of your sleeping pad. A properly rated bag ensures you wake up refreshed rather than shivering.