UD5 Toolkit
Frostbite Stage Identifier – Online Visual Signs & Rewarming
Swipe through visual stages of cold injury to understand frostnip vs. superficial frostbite. First aid reminders.
Outdoor Survival Skills
20+ toolsSleeping Bag Comfort Rating Calculator – Online Personalize
Adjust a sleeping bag's EN rating based on sleeping pad R‑value, clothing, and personal warmth.
Signal Mirror Practice Simulator – Virtual Aiming Flash
Learn to aim a signal mirror by aligning a virtual finger and target. Simulates the retro‑reflective mesh technique. Practice before you need it.
Whistle Emergency Signal Generator – Online Three Blasts
Listen to and practice the international distress signal: three short blasts. Lifesaving knowledge.
Bear Bag Hanging Simulator – Online PCT Method Practice
Step‑by‑step interactive animation for the PCT bear bag hanging method. Practice the throw and tie before you go.
Camp Stove Fuel Calculator – Online Days Left per Canister
Enter isobutane canister weight, meal count, and burn time per meal to estimate how many days your fuel will last. Plan your resupply.
Thru‑Hike Resupply Planner – Online Days Between Towns
Enter distance and miles per day to estimate food carry weight and next resupply point. Long‑distance hiking.
Wilderness Water Treatment Selector – Online Boil, Filter, Tablet
Click through symptoms (murky, clear, bacteria) and get the best water treatment method for backcountry trips.
Thermos Ice Retention Estimator – Online Based on Ambient Temp
Compare different insulated containers by their ice retention time based on ambient temperature. Help choose the right bottle for a hot hike.
Fishing Knot Selector – Online Choose by Line & Lure Type
Answer simple questions (braid/mono, hook/swivel) to see the recommended fishing knot with step‑by‑step animation.
Sleeping Pad R‑Value Calculator – Online Temperature Matching
Enter expected low temperature and get minimum recommended pad R‑value. Visual conductivity guide for winter camping.
10 Essentials Hiking Checklist – Online Interactive Pack List
Interactive checklist of the classic 10 essentials for safe hiking. Check items, see explanations, and never forget critical gear for the trail.
River Rapid Class Guide – Online I‑VI Visual Examples
Learn about the International Scale of River Difficulty with animations and description of each class.
Tick Removal Procedure Guide – Online Safe Extraction Steps
Animated tweezers technique for proper tick removal. What to do after. Prevention of Lyme disease.
Hiking Boot Fit Checker – Online Heel Slip & Toe Room
Answer questions about fit and follow visual tests to ensure your boots are the correct size.
Snake Bite First Aid Checker – Online Do's & Don'ts
Quick reference for what to do (and not do) after a snake bite. Pressure immobilization bandage diagram.
Fishing Sinker Weight vs. Depth Calculator – Online Drift Speed
Estimate the sinker weight needed to hold bottom in current based on line diameter, depth, and current speed.
Campfire Building Layout Guide – Online Teepee, Log Cabin, Lean‑to
Animated demonstrations of different campfire lay styles (teepee, log cabin, star). Choose the right one for wind and cooking.
Marine VHF Channel Guide – Online Quick Reference by Region
Select region (US, Canada, International) and see channel frequencies and usage (distress, bridge). Boating safety.
Knot Strength Efficiency Guide – Online Visual Weakness Chart
Compare common knots by their efficiency percentage and residual strength. Interactive chart with animated diagrams.