⛺ Tent Footprint Calculator

A tent's advertised "capacity" is often based on sleeping pads placed edge-to-edge with no room for gear or movement, so real-world comfort needs more space. Common industry guideline ranges are 1-person/backpacking: 2.0–2.5 m², 2-person dome: 3.0–4.0 m², 3-4 person family dome: 6.0–9.0 m², 6-person cabin/tunnel: 9.0–12.0 m², 8+ person large family: 12.0–16.0 m². For example, a 2-person backpacking tent at exactly 2.2m × 1.8m has a footprint of 2.2×1.8=3.96 m², near the top of the guideline range — a comfortably roomy fit.

A campsite needs more than just the tent floor — it needs enough room for guy-lines and stakes to extend outward. The formula is site clearance = (length + 2×buffer) × (width + 2×buffer), typically using a 1.0m buffer. For a 2.2m × 1.8m tent with a 1.0m buffer, site clearance = (2.2+2.0)×(1.8+2.0)=4.2×3.8=15.96 m² — nearly 4x the bare footprint.