Backpack Weight Calculator
Find out if your pack is too heavy — and what to do about it
Your setup
Total pack weight
Traditional15.0 kg
21.4% of body weight
What this means
Approaching the limit — consider reducing
You're near the maximum recommended load. On multi-day trips this increases fatigue and joint stress significantly. Review your Big Three — shelter, sleep system, and pack — for the biggest savings.
Breakdown
Pack-to-body ratio
Your pack is over the recommended limit
The biggest single saving most hikers can make is switching to a lighter pack — modern ultralight packs weigh 800g–1.2kg vs 2–3kg for traditional packs.
Find on Amazon →How to use the backpack weight calculator
Enter your body weight and total pack weight for an instant load ratio. The calculator tells you whether your pack is within safe limits and what category your setup falls into. Use Advanced Options to break down your Big Three and consumables separately.
What affects safe pack weight
The 20% rule
Your pack should not exceed 20% of your body weight. Beyond that, research consistently shows increased joint load on knees and lumbar spine, particularly on multi-day trips. As a physiotherapist I see the downstream effects of this regularly. The 15% threshold is the sweet spot for long-distance comfort.
The Big Three
Shelter, sleep system, and pack typically account for 50-60% of your base weight. This is where the biggest savings are. Switching from a traditional tent and sleeping bag to lightweight alternatives can cut 2-4kg instantly. Everything else is marginal gains.
Trip length changes the equation
A heavy pack for a day hike is uncomfortable. The same pack on day 4 of a multi-day trip is a different problem entirely. Fatigue accumulates, your gait changes, and injury risk climbs. The longer the trip, the more seriously you should take the 20% guideline.