Backpack Weight Planner - Total Pack Weight as a Share of Body Weight

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What it is

Backpack weight planning means adding up everything you will carry, splitting it into base gear, food, and water, and comparing the total with your body weight. Base weight is the gear that does not get used up: shelter, sleeping system, pack, and clothing. Food and water are consumables, so they shrink as the trip goes on, but you start each leg carrying all of them.

Weight is the single biggest lever on hiking comfort. A heavy pack slows you, strains knees and shoulders, and turns a pleasant route into a grind, while a lighter pack lets you walk further, enjoy the day, and recover faster. Planning the total before you pack is how you find the heavy items while there is still time to swap them.

How to use it

List your base gear weights in kilograms, one per line, then enter food days, food per day, water carried, and your body weight. Press Calculate and you get base weight, food weight, water weight, total weight, and the total as a percentage of body weight, plus a band from ultralight to heavy.

Weigh gear on kitchen scales rather than guessing: makers’ quoted weights often leave out stuff sacks, stakes, and batteries, and guesses are almost always low.

Worked example

Base gear of 2.5, 1.2, and 0.8 kilograms totals 4.5 kilograms. Add three days of food at 0.7 kilograms a day, which is 2.1 kilograms, and 2 litres of water at 1 kilogram per litre, and the total is 8.1 kilograms. For an 80-kilogram hiker that is about 10 percent of body weight, in the lightweight band, which is a comfortable target for a multi-day trip.

Add a heavier tent and a few luxury items and the same trip can pass 14 kilograms fast. The planner shows exactly which addition pushed it over, so you can decide whether the comfort is worth the weight.

How to read your result

Under 4.5 kilograms total is ultralight, under 9 kilograms is lightweight, under 14 kilograms is moderate, and 14 kilograms or more is heavy. As a rough guide, aim for a total under 20 percent of body weight for multi-day trips, and remember that the percentage matters more than the raw kilograms: a 12-kilogram pack is a different burden for a 55-kilogram hiker than for a 95-kilogram one.

Base weight is the number worth obsessing over, because food and water are fixed by trip length and conditions, while base gear is a choice you make once and carry on every trip.

Common mistakes

The classic mistake is forgetting small items, which add up: first aid, repair kit, map, sunscreen, and electronics can total a kilogram or more. Another is counting water you plan to find on the trail as weight you do not carry, then finding the source dry. A third is weighing gear without its sacks, stakes, and fuel, which are part of the real load.

Limits

This planner adds weights; it does not judge whether your gear is safe or sufficient. Cutting weight by dropping shelter, warm clothing, rain gear, or navigation tools is a false economy that can become dangerous in bad weather. Lighten the big three first, shelter, sleeping system, and pack, and keep safety gear regardless of its weight.

Questions people ask

What counts as base weight?

Everything that does not get consumed: pack, shelter, sleeping bag and mat, clothing, stove, and tools. Food, water, and fuel are consumables and are counted separately.

Is ultralight always better?

No. Ultralight gear is often less durable, less weatherproof, and less comfortable, and it demands more skill. For most hikers, lightweight is the sweet spot between comfort and weight.

Why does water count as 1 kilogram per litre?

Because that is what water weighs. Two litres add two kilograms before you add the bottle, which is why planning water carries matters so much on dry routes.

Backpack Weight Planner – Total Pack Weight as a Share of Body Weight