Heft

PACK WEIGHT PLANNER · FREE · NO ACCOUNT

Know what your pack weighs before you lift it.

Heft sorts your gear into categories, splits base weight from food, water and what you wear, and puts two trips side by side. Free, in your browser, with nothing to sign up for.

Start your list See a sample pack ↓

Your lists stay on this device. Metric or imperial.

Summer weekend

The Summer weekend sample pack: base weight 3.75 kg, packed weight 7.25 kg, total weight 8.10 kg.

Why Heft

You know your tent weighs 1,100 grams. You just don't know what the whole pack weighs, or which kilo you could leave at home.

A spreadsheet can add it up. It won't tell you that two litres of water outweigh your shelter, or that winter adds 2.4 kg before you pack a single snack.

HOW IT WORKS

Three steps, and the numbers do the rest.

  1. List your gear.

    Start from eight ready categories (Shelter, Sleep, Pack, Clothing, Kitchen, Food, Water, Essentials) and type each item's weight.

  2. Mark what it is.

    Each item is base, consumable or worn. Food, water and fuel are consumables, and your boots are worn.

  3. Read the totals.

    Base, packed and total weight update as you type, with a chart of where it all goes.

WHAT IT DOES

Built around the number that matters.

Base weight, kept apart.

Base weight is everything you carry that doesn't get eaten, drunk or burned. Heft keeps it separate from consumables and from what you wear, so the number you're trying to cut is always in view.

Compare two trips.

Duplicate a list, change it for a different trip, and see the difference by category. Lighter shows in green, heavier in amber.

Metric or imperial.

Switch units at any time. Type grams or ounces, with a comma or a dot.

Yours, on this device.

No account, no server, no tracking. Your lists are saved in your browser as you go, and they're there when you come back.

TRY IT HERE

This is the real thing.

Load the sample lists, change a weight, flip to Compare. Nothing you do here leaves your browser.

Open Heft full screen →

Pack lighter on purpose.

Start a list for your next trip. It takes about as long as weighing your tent.

Start your list

Free · Works offline once loaded · Your data stays on your device