The Birkin 40 is the original and the roomiest mainstream size — a genuine do-everything bag many treat as a chic carry-on. At approximately 40 × 30 × 21 cm, a ~13 cm handle drop and $20,300 US retail, here is what it holds and who it suits.
What fits in a Birkin 40
- A 13″ laptop or a folio, standing upright
- An A4 document or magazine, flat
- Full wallet, tablet, cosmetics pouch, water bottle
- Gym or travel essentials for the day
The 40 crosses from handbag into practical workhorse without losing the Birkin silhouette, which is why it reads as unisex and travels well.
The 40 vs its neighbours
The 30 is the elegant everyday size; the 40 carries far more. Want more height and structure? Compare the taller HAC 40 in HAC vs Birkin, or step up to the travel-sized 50 in Birkin 40 vs 50. Full range in the size guide.
Weight, value and who it suits
The 40 suits commuters, travellers and anyone who prefers a larger or unisex bag. Note the weight: empty around 2.5 lb, approaching 5 lb loaded. On resale it carries a more modest premium than the small sizes — it tends to trade nearer retail, which makes it “more bag for the money.” See our resale guide.
Frequently asked questions
What are the dimensions of a Birkin 40?
Approximately 40 cm wide, 30 cm tall and 21 cm deep, with a handle drop of about 13 cm.
Does a laptop fit in a Birkin 40?
Yes, a 13″ laptop and an A4 document both fit.
How much is a Birkin 40?
About $20,300 US retail in 2026; on resale it carries a more modest premium than the smaller sizes.
