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Used to compare load against the 20% body-weight rule.
Item Weight Category Worn Consumable

How It Works

1

What is base weight?

Base weight is everything you carry in the pack that is not a consumable — shelter, sleep system, pack, stove, clothing and electronics — excluding food, water and fuel. It stays nearly constant through the trip, which is why it is the number ultralight hikers optimize.

2

The four weight quadrants

Base Weight = packed gear that is neither worn nor consumable. Worn Weight is carried on your body, not in the pack. Consumables are food, water and fuel. Total Pack Weight = Base + Consumables; worn weight is listed separately and never counted in the pack.

3

Ultralight rating thresholds

Under 4.5 kg (9.9 lb) base weight is Ultralight, 4.5–9 kg (9.9–19.8 lb) is Lightweight, and anything above 9 kg is Traditional. The Big Three — shelter, sleep system and pack — usually offer the biggest savings.

4

The 20% body-weight rule

A common planning guideline keeps total pack weight at or below 20% of your body weight; 10–20% is the healthy range, and loads above 25% markedly raise joint and injury risk on descents. Enter your body weight to see where you land.