Camping & Tent Tools & Calculators
Free, practical tools for every camper — size a tent, decode sleeping bag and pad ratings, weigh your pack, plan your water, and cut a footprint that keeps you dry.
Tent Size Calculator
Find the tent capacity you actually need from your group size and how much elbow room or gear space you want — with an honest 'N-person' rating and the floor area to look for in ft² and m²
Sleeping Bag Temperature Guide
Decode EN 13537 / ISO 23537 ratings and pick the right bag — enter the coldest night you expect and how you sleep to learn whether to shop the Comfort or Limit rating, plus a season reference
Backpack Weight Calculator
Add your base gear, days of food, and water to see your loaded pack weight in kg and lb, plus how it compares to the 20%-of-body-weight comfort guideline and the ultralight base-weight mark
Camping Water Calculator
Plan trip water from people, days, and conditions — the total in litres and gallons, what it weighs, and whether to carry it all or plan to resupply and treat water along the way
Tent Footprint Calculator
Size a DIY groundsheet correctly from your tent's floor dimensions — inset 5–8 cm per side so it sheds rain instead of collecting it — plus floor and footprint areas and a vestibule tarp suggestion
Sleeping Pad R-Value Guide
Match a pad's ASTM F3340 R-value to the cold — enter the overnight low for the minimum R-value you need, look up any R-value's rated temperature, and stack two pads to see their combined warmth