Base weight is one of the most important concepts in backpacking, yet many beginners have never heard of it. Simply put, your base weight is everything in your pack except consumables – that means no food, water, or fuel.
Why Base Weight Matters
Your base weight gives you a consistent number to track and improve over time. Unlike total pack weight, which fluctuates based on trip length and water carries, base weight stays relatively constant.
| Weight Category | Base Weight Range |
|---|---|
| Traditional | 20+ lbs (9+ kg) |
| Lightweight | 10-20 lbs (4.5-9 kg) |
| Ultralight | Under 10 lbs (4.5 kg) |
| Super Ultralight | Under 5 lbs (2.3 kg) |
How to Calculate Your Base Weight
- Weigh every item going in your pack
- Exclude food, water, and fuel
- Don't forget worn items if you count them (some do, some don't)
- Add it all up
Most hikers don't count worn clothing and shoes in their base weight, but it's worth tracking separately as "skin-out weight."
The Big Three
About 60-70% of your base weight comes from three items:
- Backpack – 1-5 lbs
- Shelter – 1-4 lbs
- Sleep system – 1.5-4 lbs
Upgrading these three items will have the biggest impact on your base weight.
Why Go Lighter?
- Less fatigue – Every pound on your back requires energy
- More miles – Lighter loads mean faster hiking
- Less impact – Lighter loads are easier on joints
- More enjoyment – Focus on the trail, not the weight
Getting Started
Track your gear in a spreadsheet or app to see where your weight is hiding. Often, it's the small things that add up – that extra knife, the "just in case" items, the heavier-than-necessary camp chair.
Your base weight journey starts with awareness. Once you know your numbers, you can make informed decisions about what to bring and what to leave behind.