The short answer
Chanel names its sizes instead of numbering them, and the names have shifted over the decades. A "medium" in one listing is a "large" in another. So the size guide that actually works is measurement first, label second.
Three numbers decide the size: width, height, and depth. Two more decide whether you can wear it: strap drop and base width. Ask a supplier for those five numbers in centimeters and inches, then compare them to the original spec. If the width is off by more than about 1 cm, you are looking at either a mislabeled size or a body built on the wrong pattern.
Approximate dimensions by style
These are the numbers replicas are copied from. Expect small differences between factories and between production years.
- Mini square: about 6.7 x 5.1 x 3.1 in (17 x 13 x 8 cm)
- Mini rectangular: about 8 x 5 x 2.6 in (20 x 13 x 6.5 cm)
- Small classic flap: about 9.1 x 5.7 x 2.6 in (23 x 14.5 x 6.5 cm)
- Medium (often sold as medium/large): about 10 x 6.3 x 3 in (25.5 x 16 x 7.5 cm)
- Jumbo: about 11.8 x 7.9 x 3.9 in (30 x 20 x 10 cm)
- Maxi: about 13 x 9 x 3.9 in (33 x 23 x 10 cm)
- 2.55 reissue 225 / 226 / 227: roughly 9.6, 11, and 12.2 in wide
- Boy bag: about 9.8 in wide for small and old medium, 11 in for new medium, 11.8 in for large
- Wallet on chain: about 7.5 x 4.8 x 1.4 in (19 x 12 x 3.5 cm)
- Grand shopping tote: about 13 x 10 x 5 in
- Chanel 19: widths run from about 10 in up to 14 in depending on size
- Chanel 22: widths run from about 13 in up to 18 in
Strap drop tells you more than the label
Two bags with the same body can hang at completely different heights. On a classic flap, the chain is doubled for shoulder carry and single for crossbody.
- Mini rectangular: around 23 in single strap, sits at the hip on most adults
- Small and medium flap: about 9 to 10 in doubled, 19 to 20 in single
- Jumbo: about 11 in doubled, 20 to 23 in single
- Wallet on chain: about 24 in, crossbody on most frames
Ask the supplier to measure from the top of the chain to the top edge of the bag, with the chain pulled straight. Some factories shorten the chain to save hardware, which is the single most common size complaint I see on minis.
What fits, size by size
- Mini square: phone, cardholder, lipstick, keys. The extra height is what keeps it usable.
- Mini rectangular: the same load, plus room to slide a phone in flat.
- Small: phone, cardholder, compact, keys, lip balm. Sunglasses only without a hard case.
- Medium: adds a full wallet or soft sunglasses case. Still no tablet.
- Jumbo: wallet, phone, sunglasses case, compact umbrella, small water bottle.
- Maxi: adds a small tablet or a slim folder. It also gets heavy fast once the chain is loaded.
- WOC: phone, a few cards, lipstick. No wallet, no keys unless they are flat.
Details that scale with the size
Size is not only about the outline. Several details change with it, and those are the ones that make a replica read wrong.
- Quilt count: count the diamonds across the front panel. A mini built from a medium pattern shows too many diamonds and a cramped look.
- Hardware size: the turnlock, chain links, and grommets get larger as the bag grows. Oversized hardware on a mini is a clear tell.
- Rear pocket: classic flaps carry one on the back. Many mini squares skip it, and position on the panel shifts with size.
- Base width: a wider base makes the bag sit flat instead of slouching. Ask for the base measurement, not just the widest point.
How to check a supplier's numbers
- Ask for photos with a tape measure laid across the width, height, depth, and base.
- Compare those numbers to the original style spec for the exact size you want.
- Ask for the strap drop measured at full extension.
- Check the naming. Some sellers call the 10 in bag a large and the 9 in bag a medium, which flips the whole order.
- Confirm the jumbo and maxi are not swapped, since those two get mixed up often.
Once the measurements line up, decide by how you carry a bag: crossbody, shoulder, or handheld. The size chart only narrows the list. Strap drop and depth finish the job.