Bug-Out Bag Weight Calculator

Bug-Out Bag (BOB) Weight Targets

The classic military rule of thumb: a sustainable pack weight is 20-25% of body weight for trained personnel. For civilians, 15-20% is more realistic without prior load-carrying experience.

Pack weight targets by fitness level:

Examples:

• 150 lb person, average fitness: 22-27 lb pack
• 180 lb person, fit: 36-45 lb pack
• 220 lb person, sedentary: 22-26 lb pack

Above 25% of body weight, performance drops sharply — pace decreases, injury risk climbs, and you can no longer move at a tactical pace for more than a few hours.

Trip duration scaling:

• 24 hours (Get-Home Bag): 12-15% body weight
• 72 hours (Standard BOB): 15-20%
• 7+ days (INCH “I’m Never Coming Home”): 20-25%, or split between people

What drives weight up most:

• Water: 8.3 lb/gallon — biggest single driver. 1 gallon for 24 hours minimum
• Food: 1.5-2 lb per day for high-calorie, dehydrated rations
• Shelter (tarp, hammock, bivy): 1-3 lb
• Sleep system (bag/quilt/pad): 2-4 lb
• Cold-weather clothing: 3-8 lb
• Tools (knife, multitool, axe): 1-3 lb
• Medical / first aid: 1-2 lb
• Communication / navigation: 1-2 lb
• Cooking / fire kit: 1-2 lb

Reality check: Most “ultimate BOB” videos online show packs of 50-70 lb. These are unsustainable for civilian fitness levels. Test your loaded bag for 5 miles before declaring it field-ready — most people drastically overpack.

Weight-cutting strategies:

• Cache water along your route instead of carrying it all
• Switch from canned to dehydrated food (saves 60-70%)
• Replace heavy multitools with a fixed-blade knife + small repair kit
• Use a quilt instead of a sleeping bag (saves 30-40%)
• Skip “nice to have” items — every ounce counts