Tent & Shelter Size Picker
What tent rating you actually need, with a scale diagram showing whether your sleeping pads genuinely fit inside the floor.
Nominal rating versus real floor space
| Rated for | Typical floor | Per person | Comfortable for |
|---|---|---|---|
| 1 people | 20 sq ft | 20 sq ft | 0 in comfort |
| 2 people | 30 sq ft | 15 sq ft | 1 in comfort |
| 3 people | 42 sq ft | 14 sq ft | 1 in comfort |
| 4 people | 55 sq ft | 14 sq ft | 1 in comfort |
| 6 people | 85 sq ft | 14 sq ft | 2 in comfort |
| 8 people | 120 sq ft | 15 sq ft | 4 in comfort |
Buy one size up. Nearly always.
A tent's person rating is how many sleeping bags fit shoulder to shoulder with nothing else inside — no packs, no boots, no room to sit up and get dressed. It is a packing measurement, not a living measurement. The planning figure most people actually want is about 30 square feet each, which is why a two-person tent is usually right for one person with gear and a three-person tent is right for a couple.
The exception is weight. A three-person backpacking tent costs you around a pound over a two-person, and if you are counting ounces that is a real trade — which is exactly why ultralight hikers accept tight tents and car campers should not.
Things the square footage does not tell you: vestibule space, which is where boots and packs live and is often worth more than floor area; peak height and wall angle, since a steep-walled tent is far more usable than its footprint suggests; and door count, which matters enormously the first time someone has to climb over you at 3am.
How to use
- Enter how many people and what pads you use.
- Check the floor dimensions against the diagram.
- Consider going one person larger than the rating.
- Check the peak height if you need to sit up.
Frequently asked questions
Does a two-person tent fit two people?
Technically, and often not comfortably. Manufacturer ratings assume sleepers packed shoulder to shoulder with no gear inside, which is why so many people size up. Two adults with wide pads frequently do not fit in a two-person tent at all without the pads overlapping.
Why check the floor width against my pads?
Because standard pads are around 20 inches wide, and two of them need 40 inches of floor. Plenty of two-person tents are narrower than that, particularly at the foot where the floor tapers. The diagram is more informative than the rating.
What is a vestibule for?
Storing boots, packs and wet gear outside the sleeping area but under cover. It is genuinely valuable in bad weather, and a tent with a small or no vestibule means everything comes inside with you — which is where the condensation and mud go too.
What is a three-season tent?
One designed for spring through autumn: good ventilation, moderate weather resistance, and not built for snow loading or sustained strong wind. Four-season tents are stronger and warmer with less mesh, at a cost in weight and in summer stuffiness. Most people want three-season.
Why does my tent get wet inside without a leak?
Condensation. A person exhales a substantial quantity of water overnight, and it condenses on the inner surface of a cold fly. Ventilation is the answer, counterintuitive as it feels to open a vent in bad weather — a sealed tent is a wetter tent.
Does peak height matter?
More than the specification suggests. A tent you can sit up in is far more liveable during a long wet spell, and one you can only lie down in becomes trying quickly. It is worth weighing against the weight saving, particularly for trips where being tent-bound is likely.
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