Start with the two core tools
The most-used packing list builder and base weight calculator, merged into one workflow.
Why campers trust us
Expert rule engine, works offline
A built-in 200-item knowledge base applies expert rules instantly in your browser — no server, no waiting.
Evidence-based weight benchmarks
Ratings and targets follow industry ultralight, lightweight and traditional standards, not guesswork.
No sign-up, data stays private
Lists and profiles are saved only in your own browser. No account, no tracking, no uploads.
18 specialized calculators
From packing lists to fuel, water, sleep systems and safety — every trip decision covered.
Featured guides
Field-tested methods and benchmarks for lighter, smarter trips.
Frequently asked questions
Is it really free?
Yes. All 18 tools are free and unlimited with no paywall, trial period or hidden quota.
Are the packing lists AI-generated?
Lists come from a built-in expert rule engine covering about 200 items. It runs locally in your browser and never sends trip data to an external AI service.
Do I need an internet connection?
No. After the first page load every calculator works offline, so you can keep planning at a trailhead or on a flight.
Does it work on mobile phones?
Yes. The site is fully responsive on iOS and Android phones, with touch-friendly controls tested down to 360 px width.
Will there be a paid plan?
An optional Pro plan is planned with PDF export, cloud sync and custom presets. The current 18 calculators remain free.