The most common outdoor furniture mistake isn't buying the wrong style — it's buying the right style in a size that almost fits. "Almost" is the killer: the table you have to shuffle past sideways, the chair that hits the wall before anyone's sitting comfortably. The measurements below are the ones we wish everyone checked before ordering. None of them are complicated; they're just rarely written down.
Dining: the 90cm rule
A dining chair needs roughly 50cm of depth when tucked in, and a seated person occupies about 45–50cm behind the table edge. For someone to walk behind a seated guest, you want about 90cm from table edge to the nearest wall, planter or balustrade. If people only need to squeeze in and sit (no through-traffic), you can survive on 60–70cm. Measure from the table edge, not the table centre — and remember chairs with arms need a few centimetres more to tuck.
Along the table itself, allow about 60cm of table-edge width per place setting. That's how a 180cm table seats six comfortably and eight only when everyone likes each other. If you're between sizes, an extension table — or a bench down one side, which absorbs an extra body without an extra chair footprint — solves more problems than going one size up.
Lounging: closeness you can walk through
Between a sofa and its coffee table, 40–45cm is the sweet spot — drinks within reach, shins unbruised, and enough gap to walk through sideways. Between facing sofas or armchairs, around 2.4–2.7m total (including the table) keeps conversation easy without shouting. And leave one full side of any lounge arrangement open with 80cm+ of walkway; a setting you have to climb into gets used less every month you own it. Once you're actually sitting down, seat depth and seat height matter just as much as walkways — our guide to outdoor lounge cushion depth and seat height explains how to read those figures off a listing.
Umbrellas: think in three dimensions
An umbrella canopy should overhang the table by 30–50cm each side to actually shade the seats, so a 180cm table wants a canopy around 2.5–3m. Check the clearance height too — the ribs of a tilted umbrella sit lower than you think, and cantilever bases need a surprising amount of floor space behind the seating. Our umbrella guide covers the cantilever-versus-centre-pole decision in detail; the spatial rule here is simply to measure the base footprint as well as the canopy.
Balconies: subtract before you shop
On a balcony, measure the usable width — after the door swing, the tap, the air-con unit — not the advertised dimensions. A balcony setting around 60–70cm deep with a table to match typically works on anything 1.5m deep or better. Below that, think bar-style along the rail or two chairs and a slim side table. The mistake to avoid is the full dining chair that can't tuck under, which turns a walkway into an obstacle course permanently.
The masking-tape trick
Before ordering anything large, tape its footprint on the deck or pavers at full size — including chairs pulled out to sitting position, not tucked. Walk around it for two days. Carry a laundry basket past it. Open the barbecue hood next to it. It takes ten minutes and a $4 roll of tape, and it has talked more people out of the wrong table (and into the right one) than any amount of product photography. And if the spot you taped is lawn, gravel or old paving rather than a flat deck, our guide to keeping outdoor furniture level on grass, gravel and uneven pavers covers what the ground will do once the furniture arrives. Tape says nothing about how the furniture gets in, though, so if the only route to your backyard is a side gate or a lift, run through our guide to outdoor furniture delivery access before you order. If the slab isn't poured yet, the same thinking works off the plans — see our guide to ordering new home outdoor furniture before handover. Every listing in our tables and chairs and dining settings ranges includes dimensions — tape first, order second.
Stuck between two sizes for a specific space? Send us the measurements — genuinely happy to sketch out what fits, and to tell you if the answer is "neither".
