Bear Canister Calculator

Calculate the bear canister size needed based on trip duration, number of people, and food density. Required in many wilderness areas.

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Visualization

How It Works

Bear canisters are required in many wilderness areas (Sierras, Adirondacks, parts of Rockies). Plan 100 cu in (1.6L) per person per day for dehydrated food, 150 cu in (2.5L) for fresh/bulky food. All scented items go in the canister: food, toothpaste, sunscreen, lip balm, trash. Store canister 100+ feet from camp, on flat ground (not a cliff edge — bears will knock it).