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backpackingSkills

How much fuel do I need for a backpacking trip?

by Juan Melli May 17, 2021
by Juan Melli May 17, 2021 0 comment

If you plan to cook while backpacking, you need to know how much fuel you will need. Especially for longer trips or when you need fuel for multiple people, making sure you have enough fuel, but aren’t carrying unnecessary weight, can be good to know. Otherwise, you might carry too much fuel or waste money by not using up half-empty canisters.

Experiment

The goal was to answer: How much water can you boil with a new 4 ounce fuel canister?

I ran an experiment in which I repeatedly boiled about a half liter of cold tap water using a new fuel canister until there was no more fuel left.

The setup:

  • Stove: Soto Windmaster with triflex support
  • Cooking pot: Evernew .75 L Ultralight Pasta Pot
  • Fuel: MSR IsoPro fuel canister (4oz). A full canister weighs 7.4 oz/211g and contains 3.9oz/110g of fuel.
  • Half liter of cold tap water per boil
  • Conditions: indoors, no wind, 74 degrees, sea level, cold tap water

Results

Using a new fuel canister, I was able to boil 13 half liters, for a total of approximately 6.516 liters of water using 106 grams of fuel. The data table below has details of the experiment. There was insufficient fuel remaining (5g) to boil another half liter. The data for the experiment is in the table below.

  • On average, I needed 8.1 grams of fuel to boil a half liter of water (16.2 grams per liter).
  • During each 500 mL boil, I lost an average of 6 mL due to evaporation – a relatively insignificant amount.

How do I use this information to plan a trip?

You should consider all the food you plan to prepare on a trip. If you’ll be boiling water to rehydrate meals, the math is pretty straightforward – just add up the total amount of water you need to boil. Then take the total number of liters of water and divide by 16.2 to give you the total number of grams of fuel you will need. A small 4oz fuel container has 110 grams of fuel.

As a simpler example, you can also take a typical dinner meal and calculate how many of those you can prepare with one canister. A 2-serving Mountain House Spaghetti and Meat Sauce meal requires 1.75 cups (14 fl oz/414mL) of boiling water to rehydrate the meal. Since one canister can boil approximately 6.5 liters, you could prepare about 15 of these meals using one fuel canister (6.5 liters/.414 liters = 15.7).

An important note

Keep in mind this experiment was done indoors at room temperature with a stove that is designed to be efficient even in windy weather. In real world conditions, your stove, wind, elevation, temperature, and other factors could impact the amount of fuel used, plus you will want to include some extra fuel as a margin of error, so use this data just as a guide.

The Data

Boil #Water volume (mL)Starting fuel canister weight (g)Ending fuel canister weight (g)Burned fuel weight (g)
150721119912
25021991909
35051901828
45001821739
55001731667
65011661579
75001571498
85001491427
95001421357
105001351287
115011281208
125001201128
135001121057
Total:6.516 L106 g
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Juan Melli

Juan lives in Hoboken, New Jersey with his wife and two boys. He likes to explore the great Garden State and other equally nice states.

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Parker Cabin & Tom Jones Mountains – Harriman State Park
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Raymondskill Falls, Hackers Falls & Cliff Trail – Delaware Water Gap National Recreation Area

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About Me

About Me

Juan

I love the outdoors. Over the years, friends would ask me for tips on where to hike, so I started this website as a way to help others discover nature.

Through the New York-New Jersey Trail Conference, I'm a volunteer maintainer of a section of the Appalachian Trail (Garvey Springs to Kaiser Road) - which includes the beautiful Raccoon Ridge - in the Delaware Water Gap. I'm also a Trustee and Vice President of the Board of Team Wilderness, a non-profit with a mission of growing teamwork, leadership, and character within our urban youth through wilderness excursions.

Questions? Angry Rants? Jell-O recipes? I can be reached by using this form.

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Take a Hike!
  • Best Hikes in NJ
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    • Search/Find a Hike
    • Hike Map
    • Most Popular Hikes
    • Best Kid-Friendly NJ Hikes
    • NJ Hikes
    • NY Hikes
    • John Muir Trail
      • Part 1: Reds Meadow to Yosemite Valley
      • Part 2: Duck Pass to Bishop Pass
      • Part 3: Bishop Pass to Mt. Whitney
    • Appalachian Trail
    • Other
      • Barataria Preserve
      • Coconino National Forest
      • Grand Canyon National Park
      • Great Smoky Mountains National Park
      • Inyo National Forest
      • John Muir Trail
      • Shenandoah National Park
      • Yellowstone National Park
      • Yosemite National Park
  • Tips & Essentials
    • Hiking for Beginners
    • Best NJ & NY Hiking Books & Resources
    • Best Hiking Apps
    • AllTrails vs GaiaGPA
    • Hiking Gear
    • Winter Hiking Tips
    • Pequannock (Newark) Watershed Permits
    • Trail Maintenance Gear
    • Leave No Trace
  • Contact