How do I read tote bag measurements?

Width × height (× depth where given), measured across the body. The everyday anchor is an A4 sheet at 21 × 30 cm: a 30 cm-wide tote swallows A4 flat, a 40 cm tote swallows it sideways with room over. Soft, unstructured bags carry beyond their listed size because they bulge; structured bags do not.

What size tote fits a laptop?

A 13-inch laptop is roughly 30 × 22 cm, so it fits any tote from about 32 cm wide — or a soft 30 cm tote diagonally. A 15-16 inch machine needs about 36 cm. Always add a sleeve in soft or open bags: the tote supplies carrying, not padding.

What is the most useful tote size?

For a do-everything daily tote, the 30-35 cm band. For an errand-and-evening bag that never feels bulky, 20-25 cm — soft, stretchy constructions in that band carry beyond their numbers. Above 40 cm you are carrying a beach bag everywhere.

tote bag size guide

Specs, translated into life, from spoii.world.

Bag listings speak in centimetres; shoulders think in objects. This is the conversion table.

The A4 anchor

One object calibrates everything: the A4 sheet, 21 × 30 cm — the size of magazines, folders, most laptops-in-sleeves and the documents life still insists on. A tote around 30 cm wide takes A4 flat; 35 cm takes it with a water bottle standing beside it; 40 cm+ is weekend territory.

The size bands

Under 25 cm: a handbag wearing a tote's name. Phone, wallet, keys, sunglasses.
20–30 cm: the errand bag — book, pouch, small shopping. Soft mesh in this band stretches past its specs.
30–35 cm: the sweet spot. Daily carry plus groceries or a rolled towel; A4 fits.
35–40 cm: the commuter — 15-inch laptop, lunch, layer.
40 cm+: beach and weekend; glorious, and too much for daily.

Soft bags cheat their specs

An unstructured bag carries beyond its measurements because it bulges — and a knitted mesh goes further still, stretching slightly around the load. A soft 22 cm mesh bag regularly swallows what a rigid 35 cm bag refuses. The proof by real objects is in what fits in a mesh tote.

Where ours sits

Tonsiba (£95) measures 22 × 22 cm with 18 cm handles — squarely in the errand-and-evening band, and the stretchy knit carries beyond its numbers: a paperback, fruit, a water bottle, the pouch. Light enough (see why weight matters) that the size never costs you anything on the empty carries.

Last reviewed: 2026-07-16