Online Tool Store
Tent Capacity Guide
Tent Capacity Guide measures the floor honestly; the number on the box assumes mats touching and nothing else inside. Runs entirely in your browser with no.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Camping & Outdoor
Tent Capacity Guide
Frontend preview — no upload or external service.
Capacity Analysis
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How the Tent Capacity Guide works
- Measure the inner tent floor, not the flysheet footprint.
- Choose your actual mat width; wide mats change the answer by a whole person.
- Subtract one from the manufacturer's rating for comfort, and two if gear is coming inside.
The method
Manufacturer ratings assume mats touching, no gear inside and no room to move.
people = floor width / mat width, rounded down
A three-person rating means three mats side by side with nothing between them, which is why most people treat a three-person tent as a two-person tent.
FAQ
Why are tent capacities so optimistic?
Because the rating counts how many standard mats fit shoulder to shoulder with no gap and no gear. It is a packing measurement rather than a comfort one, and it is broadly consistent across manufacturers.
How much should I subtract?
One person for comfort, two if gear comes inside and you want to sit up and move. A four-person tent is a comfortable two-person tent for a long trip.
Does vestibule space count?
Not for sleeping, but it changes the answer. A tent with a large vestibule keeps packs and boots out of the sleeping area, which effectively gains you a person's worth of floor.
How we compare
| Feature | Online Tool Store | Doing it by hand | A single-purpose app |
|---|---|---|---|
| Uses your mat width | ✓ | ✗ | ✗ |
| Accounts for gear | ✓ | ✗ | Sometimes |
| No sign-up | ✓ | ✓ | ✗ |
| Nothing uploaded | ✓ | ✓ | ✗ |
Tent Capacity Guide measures the floor honestly; the number on the box assumes mats touching and nothing else inside.