What counts as ultralight?

Ultralight backpacking typically means a base weight (everything except consumables and worn items) under 4.5kg (10lbs). Lightweight is under 7kg (15lbs). Most traditional backpackers carry 9-14kg base weight. The biggest savings come from the big three: shelter, sleep system and pack.

Is ultralight gear less durable?

Not necessarily, but trade-offs exist. UL shelters use thinner fabrics that require more careful use. UL packs may lack frames suitable for heavy loads. The key is matching gear to your trip requirements — a UL tarp is perfect for summer UK camping but may not suit Scottish winter conditions.

Where should I start going lighter?

Start with the big three: shelter, sleep system and pack. These typically account for 60-70% of base weight. Replacing a 2.5kg tent with a 1kg tarp saves more than eliminating dozens of small items. After the big three, look at cook systems — going stoveless or using alcohol stoves saves significant weight.

What is a good base weight target?

For UK conditions, 4.5-5kg is a realistic ultralight target. This allows a lightweight shelter, down sleeping bag, frameless pack and minimal cook kit. Going below 3.5kg usually requires eliminating comfort items. The sweet spot for most people is 5-7kg — light enough to enjoy but comfortable enough for multi-day trips.

Ultralight Gear Substitution Calculator

Calculate weight savings from swapping standard gear for ultralight alternatives.

Current Gear Weights

Shelter (tent/tarp)

Tent dimensions

Sleep System (bag + pad)

Stem length measurement

Pack (backpack)

Enter the pack (backpack)

Cook Kit (stove + pot)

Stove specification

Water System (filter/bottles)

Water volume or measurement

Ultralight Replacements

UL Shelter

Enter the ul shelter

UL Sleep System

Stem length measurement

UL Pack

Enter the ul pack

UL Cook Kit

Enter the ul cook kit

UL Water System

Water volume or measurement

How We Calculate This

Weight Comparison

Total saving = Current gear weight - Ultralight gear weight

Enter your current gear weights and proposed ultralight replacements across five categories.

Base Weight Target

Default target: 4.5kg (10lbs) with a 500g luxury allowance for personal comfort items.

Frequently Asked Questions

Related Calculators

Pack Weight Calculator

Calculate your total pack weight including base weight, consumables and worn items.

Gear List Calculator

Build a comprehensive gear list with weights and check off items as you pack.

Sleeping Bag Temperature Calculator

Find the right sleeping bag rating based on conditions, altitude and personal factors.

Tent Capacity Calculator

Calculate usable tent space per person including gear storage area.

Backpack Volume Calculator

Determine the right backpack size in litres based on trip length and gear requirements.

Last updated: March 2026

All calculations are estimates. Always verify conditions and use proper safety equipment outdoors.