Backpack Weight Calculator

Enter your body weight and target pack weight percentage to find your ideal backpack weight. Add your gear weight to see how close you are to the recommended load. The Backpack Weight Calculator gives you your max recommended pack weight, current load percentage, and whether your pack is within safe carrying limits.

Enter your body weight (without gear)

Total weight of your loaded backpack

Trip type sets the recommended weight percentage

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Override the default target with your own percentage

Results

Recommended Max Pack Weight

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Your Current Pack is

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Recommended Target

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Weight Over Limit

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Pack Status

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Pack Weight vs Body Weight

Frequently Asked Questions

What percentage of my body weight should my backpack be?

General guidelines suggest your pack should be no more than 10–15% of your body weight for day hikes, 20% for overnight trips, and up to 25% for multi-day backpacking. Ultralight and thru-hikers often aim for under 10%. These are starting points — your fitness level and terrain also matter.

What counts as an ultralight backpack?

Ultralight backpacking typically means a base pack weight (excluding food, water, and fuel) under 10 lbs (4.5 kg). Some extreme ultralight hikers target under 5 lbs. The goal is reducing strain and increasing daily mileage on long-distance trails.

Does pack weight include water and food?

It depends on the context. 'Base weight' excludes consumables like food, water, and fuel. 'Loaded pack weight' or 'total pack weight' includes everything. For safety recommendations based on body weight percentage, use your total loaded pack weight including food and water.

Can carrying too heavy a backpack cause injury?

Yes. Overloaded packs put excessive stress on your shoulders, spine, hips, and knees. Consistently carrying packs over 25% of your body weight significantly increases the risk of back pain, joint problems, and muscle fatigue. Staying within recommended limits helps prevent long-term injury.

How do I reduce my pack weight?

Start by auditing every item and applying the 'one pound rule' — question anything over a pound. Switch to lightweight shelter, sleeping bag, and pad systems. Carry only what you'll actually use, repackage food to cut container weight, and consider multi-use items that serve more than one function.

Is the body weight percentage rule different for children?

Yes. Children should carry significantly less relative to their body weight. Most experts recommend kids carry no more than 10% of their body weight, and younger children should carry even less or nothing at all. Always prioritize a child's comfort and safety over packing efficiency.

Does fitness level affect how much I should carry?

Absolutely. The percentage guidelines are general recommendations for average fitness levels. Experienced hikers with strong core and leg muscles can often safely carry a higher percentage of their body weight. Beginners should start conservatively and build up gradually.

What is base weight vs. total pack weight?

Base weight is the weight of your pack and all gear excluding consumables (food, water, fuel). Total pack weight adds those consumables back in. Most gear reviews and ultralight communities discuss base weight, but for safety and ergonomic calculations, always use your full loaded weight.

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